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23 Best Duvet Covers of 2023, Tested and Reviewed | Architectural Digest

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23 Best Duvet Covers of 2023, Tested and Reviewed | Architectural Digest

To revisit this article, visit My Profile, then View saved stories

To revisit this article, select My Account, then View saved stories

By Audrey Lee and Kristi Kellogg

All products featured on Architectural Digest are independently selected by our editors. However, when you buy something through our retail links, we may earn an affiliate commission.

Looking for the best duvet covers? So are we. It’s no secret we’re huge sleep aficionados—our editors are constantly testing mattresses, sheets, pillows, and other sleep essentials to find the high-quality picks that truly deserve to be designated as the best. Ahead, discover in-depth reviews of 23 duvet covers. You’ll find a wide variety of styles, including the softest cottons, luxe linens, cooling eucalyptus picks, and more. Browse all our top picks, or jump to the material of your choice.

For consistency, all prices listed reflect queen-size duvets, but different sizes are available for purchase from each brand.

Linen Duvet Cover by Brookline

Tester: Zoë Sessums, digital design editor

My sleep preferences: I wouldn’t say I’m a particularly needy sleeper, but I do run quite hot, so that’s always a consideration. Also, I tend to look for nice colors, simple patterns, and a natural fiber in my bedding. I think a duvet cover is a particularly great option if you have pets (it’s easier to wash than an entire comforter or quilt), or if you like to mix up your bedroom look on the regular.

About the brand: As a hot sleeper, I find linen to be a great all-weather material. Brooklinen is the “home of the internet’s favorite sheets,” so it seemed like a worthy destination for quality bedding. This duvet is made from 100% European flax linen and is OEKO-TEX® certified for chemical safety.

My experience: I have a limited-edition blush pink linen duvet cover and find it to be really lovely. The pink gives my room a bright pop and the wrinkled nature of the linen makes the duvet not look too precious. I found the process of putting on and taking off the duvet to be as easy as any other, so no complaints here.

The bottom line: Brooklinen really knows how to make a quality set of bedding, and this is no exception. My only issue is that I wish the cover came with a set of pillowcases for the price.

Tester: Lila Allen, senior AD PRO editor

My sleep preferences: Regardless of the season or the temperature, I have to be snuggled under a cover in order to fall asleep. Generally, that means I go after bedding that I can pull up to my ears and really burrow into. Because I share my bed with a hot-blooded husband and a large Maine Coon cat, my bed tends to run warm, so I look for layerable, snuggly covers that I can pile on and take off as needed.

About the brand: A darling of the 2010s direct-to-consumer movement, Parachute is a seven-year-old home brand best known for their bedding, though the company has also dabbled in furniture, mattresses, and other essentials. Their products, including the Linen duvet cover, are Oeko-Tex Standard 100 certified, meaning that every element (even buttons!) has been tested for substances damaging to human health. Parachute also doesn’t artificially soften their products. In the wrong hands, linen can be itchy or stiff until it’s been broken in, but that wasn’t the case here. This version, made of European flax and made in the Guimarães region of Portugal, was inviting and oh-so-soft. The company also touts the material as naturally antimicrobial, which is a plus.

My experience: I was pleasantly surprised at how soft this cover was—again, with linen, sometimes it can be a roll of the dice. This set had the best of both worlds: super supple, but still casually elevated. The linen is a nice thickness too; I can’t see any trace of the duvet inside of it. I paired mine with an all-season comforter from Riley, which stays secure through a button closure on the side. Together, the two have just the right amount of rumple. My duvet does move around a bit inside of the cover, but has mostly remained in place. Best of all, I’ve been sleeping soundly with the set on hot nights as well as ones where the A/C has been on overdrive, and so far, it holds up in both situations. Not too warm or cool.

The bottom line: This duvet is a keeper. If you’re looking for a super crisp, formal bed, this is probably not for you. But for those seeking bedding with nonchalant elegance, this linen set will have a lot of appeal.

Riley Home Linen Duvet Cover

Tester: Elaheh Nozari, food and home commerce director

My sleep preferences: I like to be burrowed under covers in a cold, cold room. No matter how hot the temperature is outside, I need the weight of a heavy blanket on me to sleep well. I prefer down comforters to non-down ones because one down comforter provides enough weight to make me feel secure, and I always use a duvet cover. I prefer ones that feel crisp and cool and have some kind of texture—linen often fits the bill.

About the brand: I’ve been coveting a Riley duvet cover for a while, as the brand routinely pops up in “best of” stories online. I’ve had a few linen duvet covers in my lifetime and this one tops the list because of the dual material: linen on top (100% Euroflax Belgian linen) and a cotton percale reverse that keeps you cool and gives the duvet cover a year-round feel. All Riley duvets have ties sewn into the corners that attach to their comforters so the insert doesn’t slide around; I don’t have a Riley insert, so I couldn’t take advantage of this feature, but it is a perk worth noting.

My experience: Putting a duvet cover on is one of my most dreaded chores. I’ve either gotten better with practice, this Riley one is easier to put on than duvets I’ve owned in the past, or some combination of the two. I slept with this duvet cover after a month using another unnamed linen duvet cover, and I much preferred the texture of this one. One of my pet peeves with duvets is when the comforter slides around inside and one quadrant of the cover is just empty space; I’m extra sensitive to this because my previous duvet did it all the time, so I was extremely happy to see that the Riley duvet stayed in place, even though I didn’t use the aforementioned ties that loop onto the Riley inserts.

The bottom line: If you like the look and feel of a linen duvet cover but want it to feel more year-round than seasonal, the fact that you can reverse it into a percale duvet cover is a game changer. The linen material has a lot of texture but still feels soft to the touch.

Cozy Earth Linen Duvet Cover

Tester: Audrey Lee, commerce writer

My sleep preferences: I love using a duvet year-round and I'm partial to natural fibers.

About the brand: Cozy Earth is the very cooling result of one couple’s search for smarter bedding solutions to their clashing temperature preferences. In addition to their line of very breathable, moisture-wicking sheets that Oprah described in her 2018 “Favorite Things” list as the “softest bedding ever,” the brand has expanded into wearables and hybrid materials like bamboo linen. Plus if you’re on the fence, the brand allows returns and exchanges within 100 days, plus an additional 10-year warranty against defects.

My experience: Though I’m fond of linen in theory, I find it can be a tad too rigid for my liking. Enter: Cozy Earth’s 30% linen and 70% bamboo viscose hybrid, which was the perfect combination of airy, cooling, and not too weight-y. My trusty Sijo duvet insert fit perfectly in the duvet and was easy to secure with the thoughtfully designed inner loops. I also really appreciated that this duvet had a zipper closure, which saved me the extra hassle of having to secure a row of buttons. Since I tend to play tug-of-war with my bedding in the summer, I sometimes find my duvet has shifted within the cover during my slumber. However, throughout my time using this duvet, my insert never moved, which was a dream for me (though it would have been easy to adjust thanks to the easy access zipper!).

The bottom line: This duvet is perfect for someone who likes the way linen looks, but finds the textile too rigid. Anyone who sleeps hot or just wants some more ventilation at night should check it out.

Quince European Linen Duvet Cover

My sleep preferences: I live in a studio apartment, so my bed is not just a place for sleep but a place to hang out and decompress at random times of the day. Having a soft duvet cover is a must for me—but I’m also a pretty hot sleeper, which means that heavier fabrics that are super plush are a no-go. My cat is also the messiest person I know, so, you know, it’s got to be durable and easy to clean.

About the brand: Quince’s entire deal is about making high-quality luxury products at an affordable price. They work only with factories that are both sustainable and pay a fair wage, which is something that many shoppers care enough about to pay a little extra for, but Quince cuts back on things like fancy packaging to keep costs down.

My experience: Right off the bat, I knew this was going to be a good one. The European flax linen is so soft and comfy, and I can tell that it can take a lot of wear while still seeming luxurious. Paired with my insert, it is quite roomy, so putting it on wasn’t too bad, though I’m not a huge fan of the button closures. Sleeping with it has been a dream and it’s really easy to snuggle with. The only real downside is that it’s noticeably larger than my insert—I can tell it would be even more plush if I had a fluffier one to fill it out.

The bottom line: I would absolutely recommend this duvet cover. It may not look fancy, but if you like a softer, more utilitarian bedspread, Quince is a winner. The linen is ridiculously soft from the moment you take it out of the package, and it comes at a price that you really aren’t going to find elsewhere for the same quality.

Italic Pure Linen Duvet Set

Tester: Rachel Fletcher, senior commerce editor

My sleep preferences: Sleep is among my top five favorite things. I like a cool sleeping environment: light linens, fan or A/C running, and crisp but gentle fabrics that keep me chilled throughout the night. I almost always use a duvet cover and I like an option that’s easy to take on and off and is easy to wash.

About the brand: The Italic duvet is made of 100% Oeko-Tex certified flax linen. Linen is naturally one of the best cooling fabrics and the manufacturing process tends to use less water than cotton and is therefore better for the environment.

My experience: This duvet feels expensive. While it has a natural heft to it, it doesn’t feel heavy or weighed down when you’re sleeping under it. The material feels incredibly high-quality (Italic claims they use the same manufacturer as Ralph Lauren and Wamsutta for their linen bedding) and is as easy as a duvet can be (which is to say, not particularly easy!) to fit over a comforter. Plus, it’s machine washable and relatively easy to dry, which is much appreciated.

The bottom line: I’d definitely recommend this duvet, if linen bedding is up your alley. It’s elegant-looking, feels incredibly well made, and the price ($75-100) isn’t bad either.

Tester: Audrey Lee, commerce writer

My sleep preferences: I instinctively reach for a duvet or comforter any time temperatures drop below 75 degrees, so I like to have one readily available at the foot of my bed, even in the hotter months. I typically prefer cotton bedding, since I know it won’t irritate my skin, but I’ve also had success with linen and bamboo or eucalyptus-based Tencels.

About the brand: For over 30 years, Area has been designing bedding, furniture, and home accessories under Swedish tradition with a focus on quality craftsmanship and function. Case in point, its carefully formulated Eli duvet made of a specially formulated 55% linen, 45% cotton blend. Made in Portugal, this material mash-up is engineered to bring out the best of both worlds: the weight of linen married with the added softness of cotton—something I was excited to experience.

My experience: The first thing I noticed when the cover arrived was how weighty it was: not too stiff or overly heavy, but definitely thicker than I’m used to. That said, the linen-and-cotton blend is a winning combination in my book. Though I love the look and breathability of linen, I’m not always a fan of its rigid texture. Thankfully, that’s not a problem with Area’s cotton-linen hybrid, which really does supply a cozy, cotton-y softness, and wrinkles a lot less than my 100% linen bedsheets. If I could add just one more thing, it would be some sort of internal corner ties or snaps to properly secure it to my duvet insert (though according to Area’s founder, Anki Spets, inserts themselves should be slightly larger than the cover in order to prevent fabrics from clumping and moving out of place).

The bottom line: If you offered me a full wardrobe made out of Area’s cotton-linen, I’d take you up on your offer in a heartbeat. I can definitely see myself gravitating towards this duvet come fall or winter because of how cozy it feels. And though it is on the pricey side (a queen-size will run you just over $300), I would say it’s worth it because I can tell the quality is long-lasting.

IKEA Alvine Kvist Duvet Cover

My sleep preferences: I would consider myself a pretty standard sleeper. I like to have a lot of blankets (the fluffier the better) and warmth because I’m constantly cold. I prefer comforters and duvets to quilts, and the style and aesthetics of the bedding are as important to me as the comfort. I won’t sacrifice either!

About the brand: This is an IKEA exclusive. Like all things from IKEA, it’s budget-friendly and made to last.

My experience: I love this duvet cover. It’s lightweight cotton, and the floral pattern is great to look at—plus, the lightweight cotton has a cozy, ultra-soft feel. The duvet cover features button closure (which compliments the overall vibe and style of the duvet), and it is available in twin-, full-, queen-, and king-sizes. I pair it with this top-rated duvet insert from Amazon Basics.

The bottom line: I would 100% recommend this! It’s a great duvet cover that has lasted dozens of washes and still looks fresh (absolutely zero signs of pilling or wear). With one of the lowest price points on this list, it’s also a fantastic deal.

The Citizenry Stonewashed Linen Duvet Cover

Tester: Rachel Fletcher, senior commerce editor

My sleep preferences: What’s hotter than hot? Ok multiply that by ten and you’ve get my body temperature at night. I use all the tricks of the temperature-regulating tricks of trade I can to stay cool—from cooling linen sheets to constantly open windows to a never turned off air purifier/fan—so my duvet has to work overtime to keep me cool.

About the brand: Citizenry makes high quality, ethically sourced products in cooperation with artisans all over the world. Their style is elevated earthy, expensive casual.

My experience: I’ve been using this duvet and sheet set for over a year now and I have to say I’m a huge fan. To start, the deep terracotta shade makes my bedroom look like some kind of upscale spa in New Mexico and I very much appreciate that vibe, but it also has to be some of the softest linen I’ve come across in my work. Like most high quality linen, it has gotten softer with age, but it also hasn’t shown any major wear. The big question: it cool enough? I think for an average person the answer is yes. And even for me, the fabric of the duvet is certainly cooling, but I sometimes take a break from comforters and duvets in general during summer months. As soon as chilly evenings roll around, though, I’ll be reaching for my stonewashed Citizenry duvet, sleeping in front of my open windows in no time.

The bottom line: I would re-buy this duvet and recommend it to others. The only downside I’ve seen is that is does shed a bit, but I’m not sure if it’s the fabric or the fact that I line dry all of my laundry. It’s also not enough shedding to warrant a warning to potential purchasers—its a great duvet through and through.

Tester: Mel Studach, AD PRO associate editor

My sleep preferences: Give me a relatively firm mattress, a lightweight duvet, and a room that’s not too cold, and I’m good to go.

About the brand: I’m not sure what’s left to say about this bedding brand that hasn’t already been plastered across subway ads or Instagram feeds, but in short, the seven-year-old upstart has already garnered cool-kid status by offering top-quality products using Oeko-Tex certified products at reasonable prices.

The Classic duvet cover is made of percale, which I always liken to a crisp cotton button-down shirt. It’s soft and sophisticated in a matte finish, plus lightweight and breathable.

My experience: I’m not particularly picky when it comes to my duvet cover material—percale, linen, and sateen each have their perfect setting—but this Classic duvet cover has tipped the scales for me! I love how crisp and smooth the percale is—in both appearance and touch. And inserting the duvet was simple with help from the cover’s “long” and “short” interior tags.

The bottom line: You can’t go wrong with a classic percale bedding. Plus, Brooklinen’s assortment offers a fun mix of solids and patterns to choose from.

Boll & Branch Signature Hemmed Duvet Set

Tester: Erika Owen, global director of audience development

My sleep preferences: I am definitely a sweaty sleeper. The perfect sleep setup, for me, is in front of a fan with lots of pillows and a cozy blanket or duvet cover to curl into when the fan gets a little too chilly. When it comes to duvet covers, the material has to be silky soft and cool to the touch.

About the brand: Boll & Branch is a Fair Trade USA certified company, meaning they are held to strict environmental, economic, and social standards within their production. The duvet cover I tested is made of 100% organic cotton and included a duvet cover and two pillow shams. The material was super airy: the kind of fabric that feels cool every time you lie down. I have a less expensive cotton duvet cover from a while back, and you can really tell the difference in material. I could be lying underneath or on top of this blanket for multiple hours, leave for a few minutes, and it feels cool again by the time I jump back into bed. It’s like cuddling into a hotel bed every time.

My experience: I loved the buttons and corner ties on the duvet cover. I use an old comforter for my duvet covers and it’s prone to a bit of wiggling and bunching. That didn’t happen with this cover, thanks to the extra security. I also want to mention the pillow shams: Each one has a zipper closure so there’s no way your pillow is escaping. I really appreciated that, as I’m known to toss my pillows around a bit mid-sleep. The material gets a bit wrinkly after a few nights of use, but it gives off more of a “lived-in” vibe than messy.

The bottom line: I would 100% recommend this duvet cover, especially if you’re a hot sleeper prone to night sweats, or if you often find yourself irrationally irate when the comforter spills out of the duvet cover. The color options are also super luxe; I tested the Mineral Blue, and it adds a sophisticated pop of color to my space.

The Company Store Legends Hotel Supima Cotton Wrinkle-Free Sateen Duvet Cover

Tester: Audrey Lee, commerce writer

My sleep preferences: Loves a duvet year-round, partial to natural fibers.

About the brand: It’d be easy to outfit your whole linen closet with The Company Store’s wide range of offerings, but the brand’s bedding has always been a particular standout to me. From colorful quilts to quality comforters—and of course, lovely sheets and duvet covers—I think it’d be nearly impossible for even the pickiest shopper not to find something they love. I was excited to try the Company Store’s Legends Hotel Supima Cotton Sateen Duvet Cover, a 450-thread count duvet made from wrinkle-resistant, long-staple Supima cotton, that promises to be versatile enough for year-round use.

My experience: Straight out of the packaging, it struck me just how luxuriously thick the duvet material felt. Currently available in 22(!) different color options, I chose the calming blue Cloud shade, and absolutely love the way the slight sheen on the sateen-weave looks with my plain, white bed sheets. Corner ties and convenient button closures made it easy to secure my insert to the cover, and I was pleased to see the duvet sat nicely inside throughout my time using it (I absolutely hate it when they get twisted up and constantly have to be adjusted). Personally, I found this duvet cover to be extremely cooling—a dream for any hot sleeper or someone looking for extra ventilation in the middle of the night. And though I prefer something much cozier in the winter, I look forward to revisiting this very breathable material when temperatures run hot.

The bottom line: I’d definitely recommend this duvet cover to any hot sleepers out there. The material feels extremely high-quality, and it really reminds me of hotel-style bedding. Plus, it’s available in so many different colors, you can basically match your bedding to whatever your desired color palette or design scheme may be.

Tester: Zoë Sessums, digital design writer

My sleep preferences: Runs a tad warm, always looks out for nice colors, patterns, and a natural fiber.

About the brand: Kotn is a company based in Canada that sells lovely home goods and clothing that is ethically and sustainably made in the Nile delta. Its quality basics are made from 100% Egyptian cotton, and every purchase funds new schools. For my duvet, I have the subtle Cashmere/White Microstripe option and really love it. It has a premium 400-thread-count weave, pearlescent button closures, and inset corner ties to keep your comforter snug inside. Plus, two matching shams.

My experience: There is a nice textural quality to the microstripes, and they actually get better after a wash—a chic rumple, if you will. I found it easy to put on and take off, and a nice way to add a visual interest to my bed.

The bottom line: I’m a new fan of the brand and really think this is a worthy duvet, if you’re a fan of sustainable cotton.

Serena & Lily Border Frame Duvet Cover

Tester: Rebecca Grambone, associate social media manager

My sleep preferences: When it comes to my sleep situation, I love a room that is pretty cool temperature-wise year-round (yes, even in the dead of winter). In fact, I would rather wear more layers to bed than on top of me (a.k.a. I don’t get the hype around weighted blankets). I find it very uncomfortable when I get too warm at night and will end up tossing and turning, which is why I tend to favor more breathable fabric for my duvet cover.

About the brand: Serena & Lily is a brand known for its simplistic “California-cool” designs favored by customers who lean towards a coastal aesthetic, and their Border Frame duvet cover definitely fits the bill. This particular cover is made with luxurious cotton sateen, is Oeko-Tex certified, making it 100% eco-friendly, and is “expertly woven by the world’s best textile artisans” in Portugal.

My experience: Right off the bat, I loved the look of this duvet cover. It was simple and elegant yet had a nice touch of color from the sky blue border. It was super easy to get on my queen-size duvet, even though the sizing for this cover was made for both full and queen. At first glance, the material looks as if it is going to be super soft to the touch. However, it was just a tad more rugged than expected. But this definitely did not make it uncomfortable whatsoever. After a good eight hours of shut-eye (okay... maybe six), I’d call my overall experience with the duvet cover very positive. It kept me cool throughout the night, which mostly has to do with the fact that it isn’t super thick.

The bottom line: I would definitely recommend this duvet cover from Serena & Lily, if it’s in your price range. The material is top-notch, its design is simple and versatile, and most importantly, it’s comfortable. You won’t be sacrificing sleep over style.

Tester: Audrey Lee, commerce writer

My sleep preferences: Loves a duvet year-round, partial to natural fibers.

About the brand: Snowe is all about accessibility to great design, reflected in their lines of high-quality bedding, towels, and serve-ware. The Softexture cotton duvet cover from the brand is made of Oeko-Tex certified, 100% long-staple organic cotton and treated in Italy to give it a textured finish and overall wrinkled appearance. Its lighter, looser weave makes it ideal for summer weather, while rubber button closures and internal ties keep your insert secure.

My experience: I knew I would like this duvet from the get-go because it was everything I look for in my summer bedding: Thin! Airy! So soft! Not only did I love how the rumpled cotton felt (which I’d liken to being wrapped up in your favorite T-shirt), I loved the purposely lived-in look of it too. I HATE when my duvet insert gets twisted in the cover, so the corner ties were especially useful for keeping it secured, and I appreciated the rubber buttons, which were easy to do up and undo when it was time for a wash.

The bottom line: Because of how thin and light this duvet is I’d say it really is the perfect bedding for summer, and I’m excited to see how it holds up as I get more use out of it. I especially love pairing it with my olive green linen sheets from the Citizenry, which I think together give my sleep setup an overall luxurious, but inviting look and feel.

Hill House Home Savile Duvet Cover

Tester: Katarina Kovac, commerce producer

My sleep preferences: I gravitate toward lower temps and more layers. For materials, I’m typically looking for white bedding with a 100% cotton weave of some sort.

About the brand: Hill House Home was launched in 2016 by Nell Diamond after she saw a gap in the home market for crisp, high quality bedding. This duvet in particular is made from 100% brushed cotton sateen, which offers a velvety touch and warming effect.

My experience: One of the first things I noticed was the zipper at the end of the duvet, which was so much better than the buttons that I’ve always had on my previous ones. The powder blue trim that lines the duvet is so incredibly delicate and beautiful, as it offers a touch of color to the white and looks super tidy as a whole. Since my room follows a very minimal aesthetic, this duvet was the perfect bedding to tie the whole thing together. The trim rounds the duvet so nicely that it truly does look like you just walked into a five-star hotel. The Cloud Duvet insert pairs perfectly, providing a fluffy, full look to my bedspread.

The bottom line: Yes, I’d thoroughly recommend this duvet cover to anyone looking to elevate their bedroom without sacrificing comfort, quality, and aesthetics. The $200 price point is incredibly worth it, considering this item won’t be leaving my bed anytime soon.

Magniberg Pure Poplin Duvet Cover

Tester: Audrey Lee, commerce editor

My sleep preferences: Loves a duvet year-round, partial to natural fibers.

About the brand: Magniberg is a Swedish bedding label from founders Bengt Thornefors and Nina Norgren, who established the brand after careers in the fashion industry. With an emphasis on the highest quality materials and craftsmanship (think Oeko-Tex–certified Supima cotton and virgin wool), the brand’s style-forward line of bedding, furniture, and home accessories are designed to be mixed and matched for unconventional but still fashionable setups.

My experience: My pure poplin duvet came beautifully packaged, and compared to online product photos, the cover itself looked even better in person. I chose the brand’s 100% Supima cotton pure poplin duvet cover in Italian blue—a rich, solid color cobalt blue that I was instantly excited to slip my duvet into (I also have the brand’s striped Wall Street Oxford cover, which mimics one of my favorite dress shirts). The most surprising element of the duvet is that it has no interior ties to secure the insert or even any buttons to close up the duvet opening (instead there’s an interior fold in the opening where you can tuck your comforter away).

While I was initially convinced that my comforter would be flopping around inside and I’d constantly have to readjust it, I was shocked and amazed at just how well the insert stayed inside the cover (or rather, how well the cover clings to the insert). Seriously—it’s almost like the insert doesn’t even budge when it’s inside, something I found incredible. The cover does seem to attract a bit of lint from time to time, but it’s nothing that a roller or a good shake can’t fix. While some cottons tend to be a bit rigid, I'm a huge fan of the feel and texture of Magniberg’s design, and while I’ve already put the bedding through a couple of washes, the color still looks incredibly rich.

The bottom line: I’ve officially found my new favorite bedding with Magniberg. With both vibrant and neutral color offerings, there’s truly something for everyone. It’s definitely pricey, but in my opinion it’s absolutely worth the cost. The quality and material are what luxury bedding should feel like, plus I can tell that they’ll last me a very long time.

Homebird Soft & Cozy Sateen Reversible Duvet Set

Tester: Rachel Fletcher, senior commerce editor

23 Best Duvet Covers of 2023, Tested and Reviewed | Architectural Digest

Houndstooth My sleep preferences: I like a chill in the air so I can cuddle up under the covers, but I sleep hot. A conundrum for sure. For practical reasons, I always use a duvet cover because my dog sleeps in the bed, and, dogs being dogs, I am constantly washing and changing them out. Plus, living in an apartment, it’s way easier to wash duvet covers than to drag a bulky comforter to the laundromat every week.