Cot Mattresses

Comfortable cot mattresses designed for safe, peaceful and cosy sleep.
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Finding the right cot mattress means getting the balance of comfort, firmness and hygiene just right. Every cot mattress in this collection is hypoallergenic and designed to give your baby a safe, supportive and restful sleep from day one.

Our own-brand CuddleCo mattresses feature our signature bamboo fabric — naturally antimicrobial, softer than cotton and finished with a waterproof, machine washable cover that makes keeping things clean as easy as possible.

For families who want an extra layer of allergy protection, the Mother & Baby range uses Purotex technology — 100% organic probiotics that actively combat allergens triggered by dust mites, pet hair and more. The coconut coir construction adds natural firmness to support your baby's sleeping positions throughout the night.

All mattresses in this collection are sized at 120 x 60cm and come with a removable, machine washable cover as standard.

Not sure which type is right for your baby? Visit our mattress glossary for help choosing, or browse our full mattresses collection to explore cot bed, co-sleeper and moses basket options. Looking for the perfect pairing? Shop our cots and cot beds collection.

Why choose CuddleCo cot mattresses?

  • Standard 120 x 60cm size to fit all standard cots
  • Hypoallergenic materials for a safe, healthy sleep environment
  • Signature bamboo fabric — antimicrobial, waterproof and softer than cotton
  • Purotex technology available for active allergen and dust mite protection
  • Coconut coir construction for natural firmness and postural support
  • Removable, machine washable covers as standard
  • Tested to UK and European safety standards

Frequently asked questions

How do I choose the right baby mattress?

When choosing a mattress, consider:
- the correct size and fit
- firmness and support
- ease of cleaning (removable covers)
- compliance with UK safety standards
A well-chosen mattress plays an important role in creating a safe and comfortable sleep space for your baby.
Are hypoallergenic mattresses better for your child?

Hypoallergenic mattresses can help reduce exposure to allergens such as dust mites, making them a good choice for babies with sensitive skin or allergies. They can also contribute to a cleaner sleep environment.
Are mattress covers removable and washable?

All the baby mattress collection including the cot mattresses have a removable and machine washable cover.
Can I reuse a mattress for a second child?

Reusing a mattress is not generally recommended unless it is in excellent condition, fits the cot perfectly, and has been well cared for. Over time, mattresses can lose firmness and hygiene, which may affect safety.
How often should I replace a baby mattress?

It’s recommended to replace a baby mattress if it shows signs of wear, sagging, or damage. Many parents choose to use a new mattress for each child to ensure optimal hygiene and support.
Are your mattresses hypoallergenic?

All of our mattresses are manufactured using hypoallergenic materials to support your child's sleep.
What is the safest mattress for a baby?

"The safest mattress for a newborn is one that is:
- firm and flat
- correctly sized for the cot or cot bed
- compliant with UK safety standards
Pairing the mattress with a waterproof cover, fitted sheet and keeping the sleep space clear of loose bedding is also important.
How firm should a baby mattress be?

A baby mattress should be firm rather than soft. This helps support your baby’s spine and reduces the risk of rolling into the mattress. Soft mattresses are not recommended for infants, as they can increase safety risks.
What size mattress do I need?

Most cot beds require a mattress measuring approximately 140 x 70 cm, while standard cots typically use 120 x 60 cm. Always check your cot or cot bed’s specifications and ensure the mattress fits snugly with no gaps over 30mm around the edges.
What mattress is best for a cot bed?

The best cot bed mattress is one that is firm and flat. A firm surface supports your baby’s development and helps reduce the risk of suffocation. Look for high-quality materials, good airflow, and a design that maintains its shape over time.