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Moses baskets cribs and cradles

Cot Mattress

You’ll need to buy a cot mattress separately for your cot or cot bed – the more supportive the better!

Things to consider when buying a cot mattress

Most cots come without a cot mattress, so you’ll need to buy one separately. Your baby’s spine and bones are growing super fast, so their mattress needs to be supportive, allowing them to rest and grow. And remember, a comfortable baby sleeps better so choose your mattress well and earn a few extra zzzs!

Which cot mattress is right for you?


Foam is lightweight and cheap, but it compresses over time so it’s best for short term use only – think moses basket, crib or cradle and travel cot. Look for good quality, high density and dent-resistant options.

Sprung or pocket-sprung

These foam or latex mattresses are super supportive and let air flow inside the mattress. The springs ensure it’s supportive for longer, so it’s ideal for cots or cot beds. Generally, the more you spend, the better the mattress.

If you want to keep it natural, some mattresses are made entirely from natural, organic substances, such as cotton, wool, coir and natural latex.

How much will a cot mattress cost?

Prices start around £20 and go up into the hundreds.

Top tips for buying a cot mattress

  • Is the cover removable and machine washable at 60 degrees C?
  • Avoid gaps more than 3cm between your mattress and cot –stop those wriggly limbs getting stuck!
  • Look for good breathability or other heat regulating properties to keep your baby cool and safe
  • Hypo-allergenic materials can keep dust mites at bay
  • Ideally, buy a new mattress for each new baby, to minimise the risk of cot death. But if you do keep a mattress that’s been kindly passed on, just make sure it’s clean, dry, flat, firm and well-fitting.

Ready to buy?

Take a look at some of the popoular mattresses below.

Mamas & Papas Foam Crib Mattress

RRP: £19.95 - Buy now

Excellent value mattress for occasional use – great for holidays, or to keep as a spare in case of little accidents!

  • An 'entry level' mattress for occasional use
  • Gives adequate support to baby's head and neck in the crib
  • The mattress allows air to flow through its core
  • Can be rotated and used either way up, or turned to re-plump it if it has flattened after use
  • Can be machine washed at 60% to keep stains and germs at bay
  • Suitable for use in your crib or cradle from birth

Age: from birth
Dimensions: H89cm W40cm D3.5cm

Why we love the Mamas & Papas Foam Crib Mattress....

  • Great value for money and excellent to have as a spare in case of night-time soak-throughs!
  • Ideal replacement if you've got a second-hand or hand-me-down crib – or if you are passing yours on to a friend
  • We love that it can be thrown in the washing machine, too – and at a temperature that actually gets rid of marks!

Kit For Kids Kidtex Spring Cot Bed Mattress

RRP: £59.99 - Buy now

Fully reversible, sprung cot bed mattress to give babies and children a comfortable and well supported night's sleep

  • Mattress is fully reversible so can be turned for comfort or to hide stains!
  • Has an innovative 'Kidtex Plus™' cover which ensures good breathability and air-circulation around your baby
  • The spring construction has foam and felt layers to properly support your growing baby and give them luxurious night's sleep 
  • Mattress is  water repellent, anti-mite, and hypoallergenic.
  • Has a removable cover which can be washed in the machine at  60°C.

Age: from birth
Dimensions: L140cm x W70cm

Why we love the Kit For Kids Kidtex Spring Cot Bed Mattress....

  • It's water repellent – a must with babies and toddlers!
  • It's super comfy thanks to the sprung construction
  • You can put the cover in the washing machine so you don't have to worry about staining from accidents
  • It is a great price for such a high spec product
  • You can use it either way up so you can turn it regularly like you do an adult mattress

Purflo Breathable Cot Bed Mattress

RRP: £129.95 - Buy now

A fully washable, high spec, anti-allergy mattress which also helps to prevent baby from overheating

  • Has a special 'Amicor Pure' synthetic fibre hypoallergenic filling which helps stop the build up of bacteria and repels dust mites
  • Great for babies with eczema and asthma
  • Available in cot bed and cot sizes
  • Entire mattress can be washed at 60°C and tumble dried
  • Can be packed down into its own travel bag to take away with you
  • Supportive and comfy, adapts to your baby's body and helps protect against flat head syndrome

Age: from birth
Dimensions: L140cm x W70cm (cot bed size)

Why we love the Purflo Breathable Cot Bed Mattress....

  • It is brilliant if your baby has skin irritations or allergies
  • You can put the whole mattress in the washing machine and tumble dryer if there is a nappy leak or spillage!
  • You can take it away with you as it can be packed down – great for consistency and night-time routine for baby
  • As it is washable it can safely be used for subsequent babies
  • Comes in two sizes for both regular cots and cot beds

The Little Green Sheep Natural Twist™ Cot Bed Mattres

RRP: £179.00 - Buy now

A cot bed mattress which grows with your baby, offering two levels of support, and an all natural, chemical-free composition

  • Double sided, with firmer support on one side for babies
  • Has a natural coconut-coir construction which acts like a traditional sprung mattress
  • A layer of natural latex makes the mattress supple and durable and toddler-proof!
  • Fleece wool keeps baby's body temperature regulated, while dispersing moisture and discouraging dust mites
  • Comes with a (non-removable) quilted mattress cover
  • Has a five year manufacturers' guarantee

Age: from birth
Dimensions: L140cm x W70cm (cot bed size)

Why we love the The Little Green Sheep 140x70cm Natural Twist™ Cot Bed Mattress....

  • Handmade in the UK from organic materials and no chemicals – we love its eco credentials!
  • The different levels of firmness for baby or toddler with just a flip of the mattress is a genius idea!
  • You can purchase a mattress protector in case of accidents or staining
  • Can be used from birth until 5, so works out brilliant value over the years

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