A guide to mattress toppers

Rolled White Mattress Topper | scooms

More cost effective than replacing your mattress and the perfect way to future-proof it, a mattress topper can help you to enjoy a better night’s sleep and keep your mattress fresher for longer.

In this mattress toppers guide, our sleep experts offer their advice for choosing the correct mattress topper for you and answer some of the most common questions about mattress topper maintenance and aftercare, including:

  1. Does a mattress topper make a difference?
  2. What are the best kinds of mattress toppers?
  3. How firm should a mattress topper be?
  4. Is memory foam or down better for a mattress topper?
  5. How often should you change your mattress topper?
  6. Do you put a fitted sheet over a mattress topper?
  7. Do mattress toppers make your bed more comfortable?


Does a mattress topper make a difference?

If your mattress is getting to the end of its life or you’re experiencing problems sleeping, a good mattress topper can 100% make a difference.

Designed to lay directly on top of your mattress, a mattress topper adds an additional layer of material between your body and your mattress, helping to improve your comfort levels and provide much-needed support.

As well as its ability to help you sleep soundly, a very firm mattress topper can remedy any issues with misalignment, while mattress toppers in general can help to prevent hair, sweat, skin and dust from permeating your mattress, thereby keeping it cleaner for longer.


What are the best kinds of mattress toppers?

Mattress toppers come in a range of materials, densities and thicknesses, ranging from synthetic fibres and memory foam mattress toppers, to latex, wool and feather and down. Just as with a mattress or a duvet, what might be right for one person might not necessarily be the best mattress topper for you.

Mattress toppers also come in different sizes to provide a perfect fit for your mattress. This means you’ll have a choice of everything from a super king mattress topper and a king mattress topper to a single mattress topper, double bed mattress topper and even a small double mattress topper.

Whether you sleep on your side, back, or stomach, as well as if you suffer from any known ailments that impact your ability to get to sleep and stay asleep, also has a bearing on whether a firm memory foam mattress topper or duck feather mattress topper, is best suited to you.

In that respect, the best kind of mattress topper is one that delivers the level of support and comfort you need for your preferred sleeping style and to soothe your body.


How firm should a mattress topper be?

Again, how firm your mattress topper should be comes down to personal preference and your body’s unique needs.

A thick memory foam mattress topper with a density of 4-5 cubic pounds, for example, can relieve pressure on your spinal cord and is generally considered the best mattress topper for back pain as well as the best mattress topper for side sleepers. A foam mattress topper or latex mattress topper are also good choices if you share your bed as the materials contour to your body and absorb movement.

Conversely, if a memory foam pad is too firm for your tastes or you’re looking for a natural mattress topper, a goose down mattress topper, which has a far softer and luxurious feel (similar to that of down filled pillows and duvets) is likely to suit you better. The down can disperse easily, providing comfort, whilst also helping to keep you warmer in winter, making it a good mattress topper for maintaining an optimal body temperature at night.


Is memory foam or down better for a mattress topper?

If you’re wanting a firmer feeling mattress, a dense and thick mattress topper, such as foam, is the better choice. If you’re looking for softness, a down and feather filled topper will deliver.

Wondering if mattress toppers have a tog rating? The answer is no, the insulation of mattress toppers is not measured by tog rating like duvets.


How often should you change your topper?

You can expect a high quality mattress topper filled with memory foam, latex, or feather and down to last you somewhere in the region of three to five years with good aftercare and regular washing (one wash every three months is recommended). Just make sure to check your topper’s label to ensure it’s machine compatible for home washing. If not, you will need to follow the manufacturer’s guidance and have it professionally dry-cleaned.

If you opt for a cheaper synthetic-filled mattress topper on the other hand, its lifespan will be significantly lower and you will need to change your topper more often for it to be effective. Just one or two years is typical of the performance you can expect from lower quality synthetic toppers, so it pays to spend a little more and invest in better quality for a longer-lasting result.


Do you put a fitted sheet over a mattress topper?

Yes. Your mattress topper should be positioned directly on top of your mattress and the fitted sheet placed over the mattress topper, ideally with a mattress protector placed in between.


Does a topper make your bed more comfortable?

A good quality mattress topper can essentially breathe new life into your mattress for a few years, so in that respect it can definitely help your bed to feel more comfortable.

A mattress topper is also designed to help you achieve a better night’s sleep by supporting your body in ways your mattress doesn’t or is no longer able to, as well as by keeping your mattress free from contaminants that can degrade its quality and make it unhygienic.


Struggling to sleep soundly?

If sleep is eluding you, have you considered that perhaps the culprit might not be your mattress but your duvet? Just as essential for good quality sleep as a quality mattress, a duvet can make all the difference to how much (or how little) sleep we achieve each night.

Our scooms duvet has been engineered precisely with the ingredients for sleep in mind. Not only is it hypoallergenic but its luxurious and ethically sourced Hungarian goose down also helps to regulate body temperature, so you never lose sleep by being too hot or too cold.

Try it for up to 60-nights and see for yourself the difference a top quality duvet can make to your health, happiness and energy levels.




 Top faqs for mattress toppers 

What is the best mattress topper to get?

Choose the right mattress topper for your favoured sleeping position. Side sleepers should choose a soft, thick topper that will offer pressure relief. Back sleepers will find that almost any type of topper will suit them. Stomach sleepers will sleep best on a firm mattress that will help keep their hips aligned with their shoulders. Combination sleepers need a topper that makes it easy to move around and change positions during the night.

Do mattress toppers make a difference?

Yes, having a mattress topper can really change the way your mattress feels. A topper can make a bed feel softer or firmer, depending on which type you choose. A topper can also improve the performance of older mattresses or protect newer mattresses from premature wear.

What are the most comfy mattress toppers?

The most comfy mattress topper for you is the one that suits your sleeping position best. A topper’s materials will have the biggest impact on how comfortable you find the topper. Options include Memory foam, feather and down, Microfibre and Hollowfibre. Memory foam offers the most support but can be rather warm. Feather and down are softer and retain less heat but can flatten over time. Microfibre and Hollowfibre are the most affordable options but can become lumpy so have a shorter lifespan.


Author: Jonathan AttwoodPublished: 8 April 2024Last modified: 11 April 2024

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Bedding size guide


These are standard UK bedding measurements so if you know your mattress size, you can easily work out which duvet size you need. (Width x length.)

UK sizes Duvet size Mattress size
Single 135 x 200cm (53 x 79") 90 x 190cm (36 x 75")
Double 200 x 200cm (79 x 79") 135 x 190cm (53 x 75")
King 225 x 220cm (89 x 87") 150 x 200cm (60 x 78")
Super king 260 x 220cm (102 x 87") 180 x 200cm (72 x 78")

US/CANADA BEDDING SIZES: Approximate matches to UK sizes are US King/UK Super king, US Queen/UK King,  US Full/UK Double and US Twin/UK Single.

EUROPEAN BEDDING SIZES: Each size - Single, Double, King and Grand king - is a little larger than the UK equivalent.

Measure your mattress to see which size bedding you need: our UK v European v US mattress comparison guide.



Young children can overheat so if they are old enough to use a full size bed, we recommend using a single size 4.5 tog duvet.

 Tog rating Season / heat Feel
2.5 tog High summer / hot sleepers Light thermal insulation
4.5 tog Summer Lower thermal insulation
9 tog Spring & Autumn Cosy medium heat
All season 13.5 tog 4.5 tog + 9 tog Very warm
All season 11.5 tog 2.5 tog + 9 tog Warm
All season 7 tog 2.5 tog + 4.5 tog Lower warmth



Our goose down duvets have high 700 fill power. Fill weight is measured in GSM (grams per square metre). For example view our 9 tog king size goose down duvet for more duvet details.

Fill weight (not total duvet weight)
Single All seasons - 788gsm
9 tog - 486gsm 
4.5 tog - 302gsm 
2.5 tog - 220gsm
Double All seasons - 1168gsm
9 tog - 720gsm
4.5 tog - 448gsm
2.5 tog - 320gsm
King All seasons - 1478gsm
9 tog - 911gsm
4.5 tog - 567gsm
2.5 tog - 400gsm
Super king All seasons - 1671gsm
9 tog - 1030gsm
4.5 tog - 641gsm
2.5 tog - 480gsm



Our pillows come in two sizes and two firmness options. (Width x length.)

Standard  50 x 75cm
King 50 x 90cm



Our fitted sheets are deep fit, up to 40cm / 15.7" mattress depth. And our duvet covers fasten with large, easy to use buttons. (Width x length.)

Duvet cover Fitted sheet Flat sheet Pillowcase (pair)
Single 140 x 200cm 90 x 190cm 180 x 275cm
Double 200 x 200cm 135 x 190cm 230 x 275cm 50 x 75cm (Standard)
King 230 x 220cm 150 x 200cm 275 x 275cm 50 x 90cm (King)
Super king 260 x 220cm 180 x 200cm 305 x 275cm



Our mattress protectors are deep fit, up to 40cm mattress depth. Choose the same size protector as your mattress size. (Width x length.)

Mattress protector size Mattress size
Single 90 x 190cm 90 x 190cm
Double 135 x 190cm 135 x 190cm
King 150 x 200cm 150 x 200cm
Super king 180 x 200cm 180 x 200cm 


£10 off your first order over £200!

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