Best mattress topper buying guide

Folded white goose down topper

We're very excited to tell you that we are about to launch a new range of scooms goose down and feather mattress toppers!  We've spent over 14 months researching mattress topper materials, fillings, construction techniques, accreditations and more. 

Our new luxurious goose feather and down mattress toppers are arriving on 19 April and available to pre-order now!


If you are thinking of buying a mattress topper, make sure you read our best topper buying guide first to find out the most important things to think about when choosing your topper.

How to choose the ultimate topper – all you need to know:

  1. What is a mattress topper?
  2. Do I need a topper?
  3. What is the best type of mattress topper?
  4. Topper accreditations to look for
  5. Topper sizes
  6. What is the difference between a topper and a protector



A mattress topper is a removable layer of cushioning material that sits on top of your mattress providing additional comfort, support and protection. 



Does a mattress topper make a difference? Yes, there are 3 reasons why you should buy a mattress topper.

  1. Your mattress is getting old and is sadly not what it once was. A topper can help rejuvenate it by adding a new layer of cushioning. Although a mattress topper can improve an old mattress, it unfortunately won't fix any underlying structural issues caused by a really old or damaged mattress. You might need to buy a new mattress - check out our handy mattress buying guide!
  2. You want to dial up your bedtime to a new level of luxury! Sinking into a luxuriously soft topper can be the ultimate bedtime indulgence.
  3. You have an orthopaedic need that is not being met by your mattress. Back related issues are common and if you are a sufferer, a specialist topper could be just the thing to alleviate your discomfort during the night.



The filling is what makes a topper. There are two main categories of topper filling; natural and synthetic. Natural topper fillings include: down, feather, wool and natural latex. Synthetic fillings include: memory foam, fibres such as microfibre, gels and synthetic latex.

Here at scooms, we would always recommend a 100% natural topper that's free from chemicals and plastics. This is particularly important if you have allergies. Natural toppers are also more breathable, especially important if you are a hot sleeper.

Here is a run-down of the different types of toppers:

DOWN AND FEATHER TOPPERS: Down and feather is 100% natural. One of nature's wonder products, fully biodegradable and naturally breathable goose down provides three to four times more air circulation than synthetic materials. It makes for an amazingly plush topper.

After testing lots of different topper fillings we decided to make scooms toppers with a 85% small Hungarian goose feather and 15% Hungarian goose down filling, for the perfect mix of support and comfort.

WOOL TOPPERS: Wool is a durable, hypoallergenic and recyclable fabric. The chunky structure of wool also means that it's good for temperature regulation and will wick away moisture from your skin. The downside to a wool topper is that it will be dense and heavy, which means that it won't have the comfortable squishiness of down and feather. It may also have a bit of a 'wool' smell.

MEMORY FOAM TOPPERS: Memory foam can mould to your body shape which some people like though others don't. It can provide good contouring support and pressure relief. Memory foam toppers come in different densities to provide specific levels of support. Be aware however, that memory foam is a type of polyurethane plastic. It is produced by a chemical reaction between petroleum oils, isocyanates and reacting agents. Other additives such as flame retardants and formaldehyde-based adhesives can also be used. It is not uncommon to notice a chemical gas smell when unpacking memory foam toppers, caused by VOCs, (volatile organic compounds). We don’t use memory foam in scooms products.

FIBRE FILL TOPPERS: Typically called a variety of name such as: down alternative topper, 'feels like down' topper, polyester topper, hollowfibre topper or microfibre topper. Whilst there are subtle differences between the materials used, they are all made from Polyethylene Terephthalate or PET which is an oil based plastic. These fine synthetic fibres were created as a man-made equivalent to natural down. Whilst they are cheap to mass produce, these microfibres are a major source of pollution in our rivers, seas and food chains. We don’t use microfibres in scooms products.

GEL INFUSED TOPPERS: These memory foam toppers are produced with tiny gel beads infused into the foam during the manufacturing process. This helps the topper to dissipate body heat more efficiently as you sleep.


Goose down topper corner detail



OEKO-TEX Standard 100 for textiles - Certifies that the materials used are free from harmful chemicals.

Responsible Down Standard (RDS) for toppers containing down or feathers - The RDS certification ensures that the materials have been responsibly and ethically sourced.

Nomite anti-allergen standard - Verifies a topper's suitability for house dust-mite allergy sufferers.

Downafresh - Certifying that any down and feather meets EN 12935 requirements for hygiene and purity.

Hungarian Chamber of Commerce - A standard guaranteeing that the down and feather is genuine Hungarian.

Forest Stewardship Council (FSC) certification for packaging - Ensuring that the wood used in the product comes from responsibly managed forests that adhere to strict environmental, social, and economic standards.

CertiPUR-US certification - Ensuring that the foam used in a topper meets standards for content, emissions and durability. Certified foams are made without ozone depleters, PBDEs, TDCPP or TCEP flame retardants, mercury, lead, heavy metals, formaldehyde, phthalates. They have low VOC emissions for indoor air quality.

scooms toppers come with the following certifications: OEKO-TEX Standard 100, RDS, Nomite, Downafresh, Hungarian Chamber of Commerce certification and the FSC certification.



It's important to choose a topper that matches the size of your mattress to ensure a proper fit and no wriggling around. Toppers are widely available in most common mattress sizes. See our topper size guide for more details.



An important distinction, a mattress topper is a thick, chunky extra layer for your mattress which is designed to provide additional support and cushioning as you sleep. A mattress protector is a slim protective layer designed to protect your mattress from general wear and tear and stains. Our scooms mattress protector is made from 100% cotton for excellent breathability with gentle cushioning. See our guide to mattress protectors




Author: Jonathan AttwoodPublished: 22 March 2024Last modified: 14 April 2024

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!

Luxurious bedding & towels | scooms

+ First access to new products, clearance sales & special offers.