Flat vs Fitted Sheets — What's the Difference, Which is More Important, and Do You *Actually* Need Both?

One is essential to making the bed; the other tends to hotly divide people — where do you stand on the debate?

A bedroom with a minimalist, emerald green coverlet and a white ruffled bed skirt. The walls are white except for the back wall, which is a mix of dark and light wood paneling. There is a wooden bedside table with a green and white striped flower vase on it.
(Image credit: Alicia Taylor. Design and styling: Kerrie-Ann Jones)

My partner and I are extremely divided when it comes to where our loyalty lies in the flat vs fitted sheet debate. For me, a bed isn't complete without both a flat and fitted sheet neatly tucked in. For him, a flat sheet is only an annoying encumbrance to a good night's sleep. So, who is right?

The basic purpose of each type of bedding is simple: a flat sheet (sometimes called a top sheet) is a loose layer that lies between you and your blanket or duvet cover. A fitted sheet, in comparison, fits snugly over your mattress with elastic corners that hold it in place.

Where the fitted sheet is a staple of any well-made bed, a flat sheet — even I'll admit — is negotiable, with many choosing to forgo it. But there are benefits to both, and below, I'm diving under the covers to discover the difference between a flat vs fitted sheet, and whether you really need both.

A linen bed spread in pistachio

As shown with this bedding, you can mix and match the color of your flat and fitted sheet, allowing for a bit of creativity when it comes to your bed.

(Image credit: Bed Threads)

What constitutes a 'well-made' bed depends on who you ask. If you're still wondering what a top sheet is exactly, and how it differs from a flat sheet, I asked Livvi DiCicco, a certified sleep science coach at Mattress Clarity, to explain.

"The fitted sheet protects your mattress and stays in place while you sleep, while the flat sheet is a barrier between your body and your top layer, helping regulate temperature and hygiene," she says.

While it adds an extra layer of warmth (or a lighter layer when it's hot), the added benefit of a flat/top sheet is that it keeps your bedding cleaner for longer. "The flat sheet also keeps your duvet or blanket cleaner by catching sweat and skin oils," Riley Otis, a certified sleep science coach at Sleepopolis, tells me.

Image of a woman standing outside in a red graduation gown.
Riley Otis

Riley is a staff writer and Certified Sleep Science Coach at Sleepopolis. She’s a firm believer that there’s nothing better than a good night’s sleep. Riley graduated from Elon University with a degree in journalism and creative writing.  Sleepopolis is dedicated to helping people around the world get a better night’s sleep. The brand covers a wide range of sleep and recovery topics, including in-depth reviews on mattresses and other sleep products, sleep industry news and events, and research-focused content on sleep science and wellbeing. 

A green panelled bedroom with a dark wood bed and white sheets

Flat sheets often create a crisper, more stylized look when making a bed.

(Image credit: Scooms)

If you prefer a minimalist bedding style or are a hot sleeper, you may prefer to stick to your duvet or coverlet as a single layer. But adding a flat sheet can actually help you regulate temperature and sleep better in the heat (especially if you choose to sleep under the flat sheet as a standalone cover).

For those (ahem, my partner), who claim that flat sheets just end up getting tangled and bunched up in the bed, Livvi adds that it's a fair point, but when it comes to the fitted sheet, "it is always worth using, as there’s no real upside to going without it."

Image of a woman with brown hair and bangs wearing a light yellow turtleneck, a khaki trench coat, and bumble bee earrings.
Livvi DiCicco

Livvi has been writing and researching sleep-based content for over a year. This, alongside her penchant for napping and extreme tossing and turning, has made her something close to an 'expert' in the realm of sleep science, sleep products, and sleep accessories. 

And then, of course, it's worth considering the flat vs fitted sheet debate when it comes to styling your bed. Layering both instantly elevates the look, if you ask me. Not only can the flat sheet offer a moment of color, but it creates a more dynamic, layered, or hotel-style feel, and who doesn't want that?

To really make the sheets stand out, try playing with unexpected bedding color combinations, rather than just the classic all-white. A baby blue flat sheet paired with a light olive green fitted sheet makes getting into bed every night that much more exciting.

Making the bed may seem like an easy task, but it is also a chance to further express your interior design creativity. And for that, checking out all the latest bedding trends will be your greatest guide.

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Olivia Wolfe
Design Writer

Olivia Wolfe is a Design Writer at Livingetc. She recently graduated from University of the Arts London, London College of Communication with a Masters Degree in Arts and Lifestyle Journalism. In her previous experience, she has worked with multiple multimedia publications in both London and the United States covering a range of culture-related topics, with an expertise in art and design. At the weekends she can be found working on her oil paintings, reading, or antique shopping at one of London's many vintage markets.