Best Cot Mattresses of 2026
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Cot mattresses are essential for babies and toddlers to get a comfortable and safe sleep. These mattresses are specifically designed for cots and cribs, and come in a variety of sizes and materials to suit different needs. A good cot mattress should be firm enough to provide support for a growing baby, yet soft enough to ensure a comfortable sleep. It is important to choose a mattress that is breathable and hypoallergenic to reduce the risk of allergies and suffocation. With the right cot mattress, parents can rest assured that their little ones are getting the best possible sleep.
At a Glance: Our Top Picks
#TOP 1
9.9
#TOP 2
9.8
#TOP 3
9.6
Top 10 Cot Mattresses
Twinklesleep Hypoallergenic Baby Cot Mattress 140x70cm
The Twinklesleep Baby Mattress provides a gentle, allergy-free sleeping space, wrapped in a soft Kidtech cover that feels soothing on your baby's delicate skin. Its eco-fibre core offers firm and sustainable support, ensuring comfort without harmful chemicals. Made in the UK to the highest safety standards, you can trust it to be durable and reliable. Plus, the mattress stays cool all night thanks to breathable fabric and an open fibre core, helping your baby sleep comfortably throughout the night.
iSTYLE MODE BETTER HOME CHOICE Baby Cot Mattress
The iSTYLE Baby Cot Mattress is designed with your child's comfort and safety in mind. This hypo-allergenic cot bed mattress features a waterproof liner, ensuring protection against spills and accidents. Its breathable foam promotes airflow, helping to maintain a comfortable sleeping environment for your toddler. The easy-to-wash fabric cover can be machine washed at 40 degrees, making it convenient to keep clean. Additionally, the adjustable waterproof liner provides extra protection, while the removable cover allows for thorough cleaning, giving you peace of mind.
Toddler Cot Mattress Eco Fiber 120x60x10 cm
The Eco Fiber Cot Mattress is designed to fit popular travel cots and toddler beds from well-known brands, ensuring you find the perfect size for your little one. Its firm, high-density foam core offers excellent support for your baby’s developing back, neck, and spine, helping them sleep safely and comfortably. The quilted polycotton cover is soft and breathable, promoting airflow to keep your baby’s temperature regulated throughout the night. Made from hypoallergenic materials, this mattress is gentle on sensitive skin and free from harmful chemicals, making it ideal for newborns and toddlers alike.
Mother Nurture Eco Fibre Cot Bed Mattress
The Mother Nurture Cot Mattress offers peace of mind with its BSI standard certification, ensuring it meets rigorous safety standards for your baby. The reversible and water-resistant covers make cleaning effortless, allowing you to quickly wipe down any spills. With a firm and supportive EcoLoft Fibre core, your little one will enjoy a comfortable night's sleep. The hypoallergenic features help to keep allergens at bay, promoting a safe and healthy sleeping environment for your child.
BUY ALL HERE Crib Cot Bed Mattress with Quilted Cover
The BUY ALL HERE Cot Mattress offers a super soft high-quality foam that ensures your baby enjoys ultimate comfort throughout the night. This foam gently cradles your little one’s body, helping to reduce tossing and turning, so they sleep more soundly. The mattress contours perfectly to your child’s shape, providing excellent support and comfort. Additionally, it features a luxurious quilted cover that is removable and washable at 40 degrees, making it simple for you to keep the mattress fresh and clean for your baby’s well-being.
Mother Nurture Eco Fibre Cot Bed Mattress
The Mother Nurture Cot Mattress offers peace of mind with its BSI certification, ensuring it meets stringent British Safety Standards. Its reversible and water-resistant design allows for easy cleaning, making it ideal for busy parents dealing with spills. The firm and supportive EcoLoft Fibre core provides a comfortable sleeping surface for your baby, promoting restful sleep. Additionally, the hypoallergenic and breathable materials help maintain a safe sleep environment by keeping allergens at bay, allowing you to rest easy knowing your little one is safe.
Mother Nurture Eco Fibre Cot Bed Mattress
The Mother Nurture Cot Mattress is designed with your baby's comfort and safety in mind. It is BSI Standard Certified, ensuring it meets stringent British Safety Standards, allowing you to sleep soundly knowing your little one is secure. The reversible and water-resistant cover makes cleaning easy; simply wipe it down or pop it in the washing machine. Its firm and supportive EcoLoft Fibre core provides a safe sleeping environment, while the hypoallergenic and breathable materials help keep allergens at bay, promoting a healthy sleep for your baby.
Mother Nurture Eco Fibre Breathable Cot Bed Mattress
The Mother Nurture Eco Mattress is BSI certified, ensuring it meets strict British safety standards, so you can rest easy knowing your baby is safe. Its hypoallergenic design keeps allergens away, offering a healthy sleep environment for your little one. The mattress fibre core allows natural airflow and temperature control, helping your baby stay comfortable throughout the night. Additionally, the reversible, water-resistant cover is easy to clean and machine washable, making it simple to maintain cleanliness and hygiene with minimal effort.
Premium Travel Cot Mattress for Red Kite UK Made
The Red Kite Travel Mattress offers super soft and extra protection, providing your baby with a cosy and secure sleep environment. Its water-resistant and washable cover ensures that you can easily keep the mattress clean and fresh, while the breathable, hypoallergenic material is gentle on your baby’s delicate skin. This mattress also promotes a safe and hygienic sleep space by helping to keep your baby dry and comfortable throughout the night. Additionally, its rounded protective corners prevent any hard edges, giving you peace of mind about your child’s safety.
Luxury Baby Cot Mattress Quilted Anti-Allergy Foam
The Luxury Baby Cot Mattress offers a supportive, comfortable, and soft surface perfect for your little one’s longer sleep. Made from open cell nursery grade foam, it provides excellent breathability and moisture control, keeping your baby cool and comfortable through the night. The removable and washable quilted cover ensures you can easily keep the mattress fresh and clean, maintaining a healthy sleep environment. Additionally, it is manufactured without harmful fire retardants, prioritising your baby’s safety while they rest peacefully.
Frequently Asked Questions (FAQs)
1. What type of mattress is best for a cot?
Your baby's cot mattress should be firm, flat and supportive. This is because a soft surface is more likely to contour to your baby's body and could increase the risk of sudden infant death syndrome (SIDS). Don't choose a mattress that feels comfortable for you!
2. Are cot mattresses standard size?
The standard size of a cot bed mattress in the UK is 70cm x 140cm, which will fit in all standard sized cots.
3. How firm should a cot mattress be?
See whether the overhang touches the soft part of the sleep surface. If it does then the sleep surface is too soft to be safe. Test a few locations on the mattress, especially anywhere where the child's head might rest. A mattress should be firm enough in every location on the sleeping surface.
4. Do you need a new mattress for a cot?
Baby bedding If you're borrowing a crib or a cot, or using one that's been used by another of your children, you should ideally buy a new mattress. If you cannot do this, use the cot mattress you have, as long as it's firm (not soft), flat, fits the cot with no gaps, is clean, dry, waterproof and not ripped or torn.
During our cot mattress research, we found 201 cot mattress products and shortlisted 10 quality products. We collected and analyzed 72,162 customer reviews through our big data system to write the cot mattresses list. We found that most customers choose cot mattresses with an average price of £30.30.
The cot mattresses are available for purchase. We have researched hundreds of brands and picked the top brands of cot mattresses, including Twinklesleep, iSTYLE MODE BETTER HOME CHOICE, Foam & Upholstery Warehouse, Mother Nurture, BUY ALL HERE. The seller of top 1 product has received honest feedback from 1,059 consumers with an average rating of 4.5.
Hollie Coleman is a paediatrician from Cambridge. She acquired her degree from the University of Oxford, where she also built her copywriting skills. Hollie practiced as a paediatrician for seven years; she wrote and published a couple of books on baby products that sold massively in Europe. With Hollie's vast knowledge in paediatrics, she now dedicates her time to publishing more articles on baby products for FindThisBest.