Hotel Collection Duvet Cover

Your Complete Duvet Sizing Guide

Your Complete Duvet Sizing Guide

Sleeping is one of the most important activities of our day. When we don’t sleep right, it can have a major and long-lasting impact on our lives. So, once you’ve invested in premium quality mattresses, the fluffiest pillows, fine linens, and the softest fitted sheets, it’s time to turn your attention to the perfect duvet to suit your needs.

Choosing a duvet

Part of finding the ideal duvet lies in choosing the right sized duvet for your bed. Duvet sizes not only determine your comfort, but they also impact the look and feel of your bedroom. Longer and wider duvets can drape beautifully down the sides of your bed, adding to the elegance of the overall effect. 


Heavy duty duvets keep you super warm in the winter. A lightweight duvet will keep you cool in the summer. Some duvets come with a duvet insert or the option of reducing thickness with the change of season, avoiding a heat meltdown in the summer.


It might be important to you to choose a duvet that's machine washable, that matches the bedding style of your existing decor, that covers your bed frame, or that will guarantee you a good night's sleep.


If your bed is in need of a beautiful makeover, then searching for the right-sized duvet is a great place to start.  

What is a duvet?

But before we get into the details of duvet sizes, let’s make sure we’re all on the same page about what a duvet is. We love duvets because they offer so much more comfort than flat sheets. They’re snuggly and warm and thick.  


These quilted blankets are designed to fit neatly inside what’s called a duvet cover, giving us the exact kind of cocoon we need to feel safe, comfortable, and taken care of at night. When you buy the right sized duvet for your bed, it will spill over the edge of your mattress, guaranteeing the exact amount of material necessary to keep everyone in the bed warm and cozy. 


Duvets are made for corresponding bed sizes. If you sleep on a queen mattress, then a twin XL size duvet isn't going to be large enough. On a similar note, while queen duvets might be long enough to dress a jumbo queen, they won't work on a king-size bed, because mattress depth makes cal king beds taller.


Duvet sizes at Mellanni

At Mellanni, most of our covers are available in the following sizes: twin, twin XL, full, queen, king, and California king. We offer this complete range of duvet sizes so that all beds in the family home can be properly catered for: children, teenagers, mom and dad, and family guests. 


While most duvets tend to fall within the same size range, we know it’s helpful to have specific measurements. With that in mind, here’s a breakdown of all sizes available at Mellanni.

Which size duvet for twin beds?

The twin-size duvet is the smallest duvet you can buy. A twin-sized duvet, made for twin beds, can begin from around 64” x 88”, but individual measurements naturally differ from brand to brand. On average, a twin duvet cover at Mellanni measures 90 x 68 inches  | 229 x 173 cm.

Which size duvet for twin XL beds?

The next size up from the twin bed is the twin XL. This mattress size tends to measure around five inches longer than twins, despite being identical in width. Mellanni twin XL covers differ slightly from our twin measurements, both in terms of length and width, measuring 92 x 69 inches| 234 x 175 cm.

Double beds or full bed sizes

If you’re dressing a guest bedroom, a full-sized bed is a great option. It’s not too large for a second bedroom, but it's a mattress size that gives guests the room they need to sleep comfortably. The average full duvet cover is designed for mattress sizes around 95” x 98”. A Mellanni full duvet cover measures 90 x 80 inches | 229 x 203 cm.

Queen beds and queen size duvets

The next size up is the queen-sized duvet. While the difference may seem minimal, queen-sized duvets do tend to be a little larger than full duvets. Queen beds and queen duvets are ideal for people who sleep alone, but who love having that extra space to promote healthy sleep. The average queen duvet cover at Mellanni is made to fit queen mattresses that measure 90 x 90 inches | 229 x 229 cm.

King beds and king duvets

Most people want to sleep in a king-sized bed, particularly when sharing with another person. King-size duvets can make an impact as they cascade over the edges of a beautiful king-sized bed in the master bedroom. Most king-sized duvet covers in the Mellanni range measure 90 x 104 inches | 229 x 264 cm. The jumbo king duvet is a duvet size option that's less common. Jumbo king duvets are, as the name suggests, slightly larger, resting between king-size duvets and the California king.

Which size duvet for California kingbeds?

The final and largest duvet size available is the California king. If you love to have lots of space and you don’t want to fight over the duvet ever, go for a California. In fact, you might even want to invest in a California duvet for a standard king-size bed. It just gives you that extra bit of duvet material that you might need and enjoy. Most California duvet covers at Mellanni measure 98 x 104 inches | 249 x 264 cm.


To facilitate comparisons, we've placed all our standard duvet dimensions in the duvet cover size chart below.

Exceptions to the rule

Despite the above list of Mellanni duvet sizes, there are some exceptions to the rule. One of those exceptions is our Hotel Collection Duvet Cover Set. Our hotel-grade duvet cover comes with secure ties and interior button closures, making it easy to remove the duvet inserts before washing.


The duvet cover itself is made from Mellanni’s signature double-brushed microfiber material. Each square inch of this hypoallergenic duvet set is fade, stain, shed, and wrinkle-resistant. Most importantly, when it comes to size, this particular duvet cover set doesn’t follow the standard size rules as outlined above.


It’s only available in two sizes: full/queen (ideal for a queen bed, a jumbo queen, or double bed) and king/California king, a larger-sized duvet (ideal for king beds, king mattresses, or a taller bed). Each duvet's exact dimensions are as follows: 


Full / Queen: 90 x 90 inches | 229 x 229 cm

King / California King: 90 x 104 inches | 229 x 264 cm

Going Beyond Duvet Sizes

When you know which duvet size you need for your bed, you can begin to turn your attention to other aspects, including fabric type, color, thread count, and pattern. Let’s begin by taking a look at fabric.

Choosing Your Duvet Cover Fabric

The fabric you choose is always important. Not only because of how it looks, but because of how it feels on your skin and the kind of sleeping experience it guarantees. It's also important to find out if your new duvet is machine washable or not. Most duvet covers are made from different kinds of cotton: regular cotton, organic cotton, Egyptian cotton, Supima cotton, and the list continues.


As manufacturers become more creative, hoping to improve the quality of our sleep, more options appear on the market made from flannel, silk, bamboo, microfiber, velvet, and satin, to name a few. Choosing the right kind of material for you will depend on your budget, your personal taste, and the options available to you in the local area. 

Cotton Duvets

There are a number of benefits to choosing cotton as the fabric of your duvet cover. Cotton is a pure and natural material. It’s a highly breathable fabric and it has the intriguing capacity to be able to keep you cool on summer nights and to absorb your body heat to keep you warm in the winter. Egyptian cotton duvets are particularly soft, offering a very comfortable night’s sleep. 


On another note, duvets made from 100% cotton have a long life span. The structure of the fabric makes them durable and resistant to wear and tear, because the prime material is natural. It’s easy to get a cotton duvet clean, as most tend to be machine-wash friendly. Great news for families and busy households. 

Silk Duvets

Silk, like cotton, is a natural fiber. As such, silk duvets offer warmth in the winter and keep you cool in the summer. The manufacturing process of a silk duvet is a specialist one. When you invest in a silk duvet, you can be pretty sure that you’re buying a quality product. Each individual silk strand is placed on top of another until the desired weight is achieved. The process is a delicate one. 


Another advantage to owning a silk duvet is that silk fibers are mildew and mold resistant. This means your silk duvet cover is easier to maintain. You’ll find that silk duvets collect less sweat, body oils, and bacteria growth than other synthetic materials.

Microfiber Duvets

Microfiber duvet covers can be the ideal choice for people who suffer from intermittent allergies. Floating dust particles, mold spores, and pollen are examples of irritants that can attach themselves to fabric and interfere with our sleep. But microfiber duvet covers tend to reduce these issues, mainly because the fabric used is so tightly woven that particles don’t become lodged in the fabric.


In the same vein, the tightly woven fabric of a microfiber duvet cover is what helps to make it so resistant to stains, making it the ideal duvet cover choice for children. Many people opt for a microfiber duvet cover because, in general, there’s a wider range of products on offer to suit all kinds of budgets. 

Microfiber Duvets at Mellanni

At Mellanni, there are three particular duvet cover sets that spring to mind as part of our microfiber range. The first, our 1800 Microfiber Duvet Cover Set, is available in twin, full, queen, and king sizes. It’s made using 100% double-brushed microfiber, interior ties, and button closures, which means there’s no risk of broken zips. 


A second option is the Microfiber Duvet Cover Set with Velvet Stripe. This duvet cover set is available in twin, twin XL, full, queen, king, and California king sizes. It’s also made from 100% double-brushed microfiber, but its 15.5" crushed velvet band is a decorative feature that offers something a little more special, giving buyers the chance to find ways of matching home decor. 


A third option is the Microfiber Duvet Cover Set with Pinsonic Stripe. This modern-looking duvet cover set offers an eye-catching pinsonic stripe design, made from 100% brushed-microfiber. With its four corners and four center ties, your duvet stays in place all night. The button closure makes putting the cover on and off nice and easy, and it also means that you avoid the problem of broken zippers. It’s available in twin, twin XL, full, queen, king, and California king duvet cover sizes.

Bamboo Duvets

Four times more absorbent than cotton, Bamboo duvet covers are very effective at keeping the skin cool and dry. It’s a material that wicks away moisture, allowing your body to maintain a constant body temperature. As moisture rises to the surface of your bamboo duvet cover, it evaporates and cools you down, working in a very similar way to the way in which your body operates when it sweats to cool you down.

Flannel Duvets

Flannel is a fabric made from a mixture of cotton and wool. It’s ideal for keeping you warm during winter nights. Flannel adapts quickly to your body temperature, which is why you feel instantly warm and snug when you get into a flannel-made bed. If you don’t like having cold feet when you sleep, this is a great option for your bedroom.

Polyester Duvets

Polyester is a man-made synthetic fiber. Duvet covers made from polyester are budget-friendly, super easy to keep clean, and they tend to be available in a range of sizes and colors or patterns to match a wide range of interior design ideas. 

Velvet Duvets

Mellanni’s Soft Velvet Duvet Cover Set is available in twin, twin XL, full, queen, king, and California king duvet cover sizes. It’s a plush, yet durable, duvet set option designed to add a touch of luxury to bedroom decor. It’s zipper-free and dual-sided, offering a lush velvet topside that beautifully combines with a smooth, double-brushed microfiber bottom. This duvet set promises maximum comfort and style in a range of colors.

Does Thread Count Matter?

Yes! If you invest in a duvet cover with a thread count below 200, you risk the duvet filling spilling through. No matter the duvet size, anywhere between 200 and 600 is where you want your duvet to be. Naturally, the higher the thread count, the softer and more durable your duvet cover will be.

Choosing the Filling in Your Duvet

So, once you've explored different duvet sizes, you've selected the fabric type, and you’ve checked the thread count, you need to turn your attention to filling. The filling of your duvet inserts might be one of the most important aspects of your duvet and there are a variety of options for you to choose from. Let’s take a look.

Duvets Made From Down and Feathers

A down duvet is particularly snug and cozy. Most down duvets are made using the insulating undercoat feathers from waterfowl. Feather duvets, on the other hand, are made using feathers taken from the exterior feathers of birds. These duvets tend to be a little more rigid than down-filled duvets, but they also feel a little lighter than their down-filled counterparts. 

Wool Duvets

Wool filling duvets are another great option. The great thing about a wool-filled duvet is that it tends to be hypoallergenic and water-resistant, so they’re the ideal option for children who are more prone to spilling things.

Synthetic Polyester Filling

Synthetic polyester is a duvet filling alternative that mimics the lush feeling of down without actually being down. What’s the advantage of this? Some people are allergic to down or feather-filled duvets. A synthetic option provides all the comfort and softness of down while dealing with the issue of allergies. Synthetic duvets are also more machine-wash friendly than their feather and down counterparts. 

Guest Room Duvet Ideas

When looking for duvets for guest rooms, you probably want to pay just as much attention to decor as to quality. Try something fun and plush, like a velvet queen duvet. Spruce up a lifeless room with a little color. Explore the size duvets range in. Ask a certified sleep coach for advice. 


Invest in a series of duvet options to match each of your guest’s needs: a synthetic filling for guests who suffer from allergies and maybe a stain-resistant microfiber queen duvet for guests who come to stay with children. Have fun and mix it up!


Do You Need a Duvet Cover?

Without a doubt. Whatever size duvet you have, you always need a cover. Think of the cover as a big pillowcase for the duvet insert to fit into. It will protect the insert from dirt and sweat and, as it’s removable, it’s easy to clean.

Should the Duvet Size be the Same as the Cover?

Invariably, duvet inserts are designed to be a few inches longer than their covers, creating a fluffier look once the duvet is inside. However, the standard duvet size, whether a twin duvet, a king duvet, or anything in between, can vary, so be sure to check the measurements before you buy.

What is a Duvet’s Fill Weight?

Fill weight refers to the ounces of down inside your duvet. It goes hand-in-hand with fill power, or the amount of space taken up by one ounce of down. The basic rule is: the higher the fill power, the higher the quality of the down and warmer your duvet will be.

More Questions on Duvets?

If you still have questions related to duvets and the right size for your bed, feel free to reach out to our team. We’ll be more than happy to help guide you.

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