Mother and Baby

The best cot mattresses

Section: Shopping Ideas
The best cot mattresses

The right cot mattress not only helps your little one get a sounder sleep, but it supports her as she grows. With plenty of different cot mattresses to choose from, the choice can seem overwhelming, so we've put together our top market picks and Mother & Baby award winners here, so you really can get the best cot mattresses for your baby. 

What are the different kinds of cot mattresses on the market? 

When it comes to choosing a mattress for your baby's cot, you have three main choices: foam, spring or natural fibre.

  • Foam cot mattresses are usually the cheapest and lightest option. Foam cot mattresses come in a variety of thicknesses, but it's recommended you go for a firmer design to avoid the risk of suffocation and Sudden Infant Death Syndrome (SIDS).
  • Spring mattresses (made with sturdy coils) and pocket sprung (made with steel springs that adjust to your baby's body) are other popular options.
  • Natural fibre cot mattresses are recommended for moisture absorption, or PurFlo cot mattresses are popular for air circulation.

How do you choose the best mattress for you and your baby?

It all depends on your price, how sensitive your baby is and personal preference for firmness. 

What size do cot mattresses come in?

Some general advice for all cot mattresses: They come in two standard sizes: 120cm x 60cm and 140cm x 70cm. Make sure there isn't more than a 3cm gap between the mattress and sides of the cot-bed! 

How to pick the best cot mattress and bedding for my baby 

It’s a significantly exciting period when you’re expecting your first child, but knowing how to choose the right mattresses and bedding can sometimes seem a little overwhelming. The experts over at Naturalmat have put together an informative guide on how to choose the right bedding for your new baby.

What are the best baby cot mattresses on the market? 

We've summed up our favourites here: 

Naturalmat Quilted Latex Mat


Naturalmat Quilted Latex Mat

With a 4-star review, this cot mattress is made from organic materials that boast breathability and softness, it's hypoallergenic and anti-dust mite. With a 5-year guarantee, you can rest assured this cot mattress will stand the test of time and will last until your little one grows out of it. Our Mother & Baby tester, Emma Shilton gave it the following review: 'My son Olly had a great night’s sleep on this. It’s a moderately soft mattress which is really comfortable. It has layers of organic coir, organic lambswool and a cotton cover that’s removable and machine washable at 60C. the latex foam core means it has good breathability.'

Kit 4 Kids Ellergenic Pocket Spring Cotbed Mattress

Kit 4 Kids Ellergenic Pocket Spring Cotbed Mattress

This 4-star rated mattress was voted the best for allergies in our Mother & Baby awards, after being the first cot bed to be approved by Allergy UK, offering protection from allergens and microbes. It may be on the pricier side, but if you have a sensitive baby who is already showing signs of allergies, it's definitely worth it. What's more, with a firm side for newborns, and a spring side for growing toddlers, this cot mattress will adapt to the needs of your baby as she grows. Our panel of Mother & Baby mums loved the anti-allergy properties, saying: 'It features the latest anti-bacterial materials to prevent the build-up of germs, microbes and bed mites. It is so soft. Plus it has a reversible waterproof layer to keep it dry. This also helps reduce sweating and helps your baby maintain a constant temperature."

Safe Nights Memory Wool Mattress

Silentnight Safe Nights Memory Wool Mattress

Winning gold for the best nursery product at our 2016 Mother & Baby awards, this pocket sprung mattress not only regulates your baby's temperature, it's also double sided - with a heavier weight quilting for winter and lighter for summer. Natural Airstream wool will give your baby a comfortable night's sleep. Allergy UK approved, the clever foam-free material is treated to reduce moisture and dust-mite allergens. Our Mother & Baby awards mum tester Lizzie Jackson gave it a glowing review: 'Together with his new cotbed, my son now loves sleeping and going to bed. This has made an immeasurable improvement on my life. I just wish I'd found it sooner.'

Silver Cross PostureStart Care & Protect Plus Mattress

Silver Cross cot mattress

This Silver Cross cot mattress might be slightly more expensive than others on the market, but it's unique pocket Babysprings provide excellent support as your baby grows. The mattress supports your baby's hips and lower lumber, where their body weight is greater, it offers unrivalled comfort and reduces your tots need to move as she sleeps. In addition to the double comfort, the mattress has a firmer side for infants 0-18 months and a softer sleep side for babies 18 months and over. 

Little Green Sheep Twist Mattress

£142.49 - RRP: £179.00

The Little Green Sheep Natural Twist Cot Mattress

A Mother & Baby awards bronze award winner, this mattress will last your baby a while thanks to its double-sided features. One firm side perfect for under 18 months, and one softer for your growing toddler. Made from a combination of natural latex, coconut coir, unbleached cotton and fleece wool, it's eco-friendly and chemical free. It gets five stars from our panel of Mother & Baby testers for its comfort and breathability, it's also super affordable which is another definite plus point! 

Coolio 140 Cot Bed Mattress

This 4.5-star mattress is made from tensile springs which ensure durability and strength lasting you for years. It's suitable from birth and has an easily removable layer system for fuss-free washing. Whatsmore, the adjustable waterproof liner means that it can be moved as your baby grows.This supportive mattress is a great choice for long-lasting comfort.

Mothercare Essential Foam Waterproof Cot Mattress

Affordably priced, this SAFEseal foam core mattress has a PVC layer for easy cleaning with the foam interior providing firm support for your growing baby. It fits a 70 x 140cm cot bed and gets rave reviews online for its quality and price. 

Saplings Bamboo Mattress

Perfect for environmentally-friendly parents, this mattress is made with bamboo which boasts natural antibacterial qualities making it resistant to pests, fungi and bacteria. A spring cot mattress, it's quilted cover means it's firm yet super comfortable.

Airo Cot Bed Mattress


This innovative mattress is a life saver for those nighttime leaks, as the top cover is waterproof and removable. The best part? You can lay your baby right back down, as underneath that top layer is a second microfibre cover that can also be slept on. Doubled-sided, it has so many snuggly layers your baby is bound to relax straight into this mattress. With great breathability and anti-bacterial properties, this anti-dust mite mattress is a winner.

Boori Natural Pocket Spring Mattress

This high-end mattress might be on the more expensive side of things, but there's plenty of reasons why - it's made from 100% cotton cover and features 1,000 small pocket springs for a super comfortable nights sleep. Its 100% pure British Herdwick sheep wool comfort layers make it warm in the winter and cool in summer, proving its durability through the seasons. Double-sided for extra durability, this will not only last, but it will be ideal for babies with sensitive skin.

Babies "R" Us Ellergenics Cotbed Mattress

Babies "R" Us Ellergenics Cotbed Mattress 140x70

This waterproof mattress received a four-star rating from our Mother & Baby mums. Its pocket sprung so long-lasting, plus has a five-year lifespan making it good value for money. The anti-fungal/microbial properties are excellent for reducing allergens, with its breathability also allowing the mattress to regulate your little one's temperature throughout the night. 

Naturalmat Quilted Coco Mat

£136.92 - RRP: £175.00

Naturalmat Quilted Coco Mat Cot Mattress

This 4.5-star mattress was given a Mother & Baby silver award for being the best natural product in 2017. A great choice if your baby is suppering with allergies or asthma, it's naturally anti-dust mite, chemical free and non-toxic. Using entirely organic materials, such as coir (coconut fibre) this cot mattress provides support, breathability and self-ventilation. Handmade in Devon, it also comes with a 100% cotton machine washable cover for easy cleaning! Mother & Baby tester Ali Chapman recommended this mattress to all her mum friends: 'It's the bee’s knees in terms of ensuring optimal health for your baby. It's supportive and comfortable and my son is sleeping so much better on this mattress than our previous one.'

Obaby Natural Coir/Wool

£102.99 - RRP: £119.99

Another great option for environmentally conscious parents, this mattress is made from coconut coir and bonded with latex. The inner core is wrapped in lambs wool as an anti-dust mite fleecing, plus it helps regulate your baby's body temperature when she is sleeping. The removable cover is made from organic bamboo, which is tough on bacteria and odours. With a five-year guarantee for the UK and Ireland, this mattress is great value for money.

Saplings Cool Flow Cot Bed Mattress

This super anti-allergenic mattress has five layers of material to prevent allergies. Perfect for young babies, it's quilted with luxury polyester fibre to ensure maximum comfort for your little one. For the luxury materials used to make it, it's also pretty well-priced.

Want to make your sleeping routine even easier? Take a look at our top picks for the best night lights on the market.

Now read:

How to ensure your cot is safe for your baby


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