Over the last twelve months here at Natural Bed Company we’ve seen a huge increase in the number of bedding orders received online – from our wide range of cotton and linen duvet covers to the always popular Bronte throws. We’re always looking to add to our range, whether with natural, organic cotton bedding or luxurious 1000 thread count sheets, so we can guarantee you’ll find something to fit the design of your dream bedroom.

With increased interest in our bedding collection comes more enquiries from customers unsure about which size to buy for their bed. In this blog I’ll break down the different size options available and advise on how the bed base can impact on the best size of bedding to pair with it.

Duvets & Duvet Covers

First, lets take a look at duvets. Below, you’ll see an overview of the standard UK sizes in double, king and superking:

Double – 200x200cm (double mattress size 135x190cm)
King – 225x220cm (king-size mattress dimensions approx. 150x200cm)
Super-King – 260x220cm (super-king mattress dimensions approx. 180x200cm)

berry colour gingham duvet set

For bed bases such as our Zanskar, Cochin and Tibet, you’ll be fine using a king size duvet with a king size bed as the base is tall enough so the duvet does not reach the floor. Some customers even choose a king-size duvet and bedding to use with their double bed. If you have a taller bed or a deep mattress – this won’t be problem.

However, if you have a much lower bed – like the Kobe, Oregon or Ki – with a slim mattress it may be worth downsizing the bedding size, to ensure the duvet does not completely cover the base.

Pillows & Pillowcases

We offer a range of pillows (feather & down, wool, tercel, silk or cotton filled) in a standard 50x75cm size to fit in our Housewife (plain) or Oxford (with a fabric border) pillowcases.

If you are searching for 90cm wide pillows for a super-king bed – please contact our sales team on 0114 272 1984 to order.

Bedspreads

The ‘double, king and super-king’ sizes mentioned above are also applicable to bedspreads and quilts, but it is worth noting that not all sizes are available for each item in our range. You may find that bedspreads come in just one size e.g. 220x240cm – a mid size that will work for king and super-king (even a double, depending on the bed height and the style you like). Some suppliers offer a ‘single size’ of 190x250cm – e.g take a look at the Anja bedspread – although only 190cm in length – if you don’t need the quilt to cover your pillows – this size is actually big enough for a super-king, ample for a double. Some quilts are considered ‘bed runners’ – intended to cover just the end of your bed (great for keeping your toes warm on cooler nights!)

Fitted Sheets & Flat Sheets

Although we stock a wide variety of UK standard size mattresses (and can source European and US sizes from our suppliers) we currently only offer fitted sheets in double, king and super-king sizes. However, if you have a euro-double (140x200cm) or euro-king size (160x200cm) mattress and like the look of our linen or organic cotton bedding, then flat sheets are available. Although you may need to brush up on your hospital corners if you take this option!

If you are about to purchase a fitted sheet it’s always worth measuring the depth of your mattress and checking it against the ‘box depth’ of the fitted sheet. Most fitted sheets have a depth of around 35-38cm (e.g our new linen blend fitted sheets – in a double size – are 140cm in width and have a generous 38cm box depth – so they should fit even deep double or euro double mattresses).

Throws & Blankets

The majority of our Bronte throws measure 140x180cm, making them ideal for double and king size beds and a possible addition to a super-king base depending on the height and how the throw is folded. If you intend to use one of our Soft & Cosy throws on a bed base, please note that these measure 150x200cm, making them a little easier to add to a super-king.

Each of the beds on display at our Sheffield showroom is beautifully dressed with examples of our wide range of bedding, so if you are undecided and can make the trip to come and see us, all of the options I have discussed above are available to view. All of the bed bases on display are standard UK king size and we have a mix of king and double duvets on each base to illustrate the points I made earlier.

FAQs About Bedding Sizes

What size duvet should I choose for my bed?

The best duvet size depends on the size of your mattress and how much overhang you prefer. In the UK, standard duvet sizes include:
Double duvet: 200 × 200 cm (for a 135 × 190 cm double mattress)
King size duvet: 225 × 220 cm (for a 150 × 200 cm king mattress)
Super king duvet: 260 × 220 cm (for a 180 × 200 cm super king mattress)
Some people prefer to size up – for example using a king size duvet on a double bed – to achieve a fuller, more luxurious drape.

Can I use a king size duvet on a double bed?

Yes, many people choose to use a king size duvet on a double bed. This can provide extra coverage and reduce the risk of the duvet being pulled off during the night.
However, if your bed frame is low or your mattress is slim, a larger duvet may hang too far down the sides. In these cases, a double duvet may give a neater look. 

What size pillowcases fit standard UK pillows?

Most standard UK pillows measure 50 × 75 cm, which means they fit both housewife pillowcases (plain edge) and Oxford pillowcases (with a decorative border).
Larger or wider pillows are sometimes used on super king beds, but these are less common and may require special ordering.

How do I choose the right fitted sheet size?

When choosing a fitted sheet, it’s important to check both the mattress width and mattress depth.
Many fitted sheets have a box depth of around 35–38 cm, which is designed to accommodate modern mattresses and mattress toppers. Measuring your mattress before buying ensures the sheet fits securely without slipping off the corners. 

Do bedding sizes vary between countries?

Yes, bedding sizes can vary significantly between the UK, Europe and the US. For example, a Euro king mattresstypically measures 160 × 200 cm, which is wider than a standard UK king.
If you have a non-UK mattress size, flat sheets or bespoke bedding may offer a better fit.

Why does bed height matter when choosing bedding?

Bed height can affect how your bedding looks and fits. For example, a tall bed frame or deep mattress may benefit from larger bedding to ensure adequate coverage, while low bed frames may look better with slightly smaller bedding to avoid excessive overhang.

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