Can I buy a second-hand cot bed mattress?
Short answer: Check it is complete, undamaged, comes with instructions and meets the relevant British Standard. For mattresses, the Lullaby Trust recommends a new one for each baby where possible.
- Confirm the cot bed's mattress size before buying, as frames vary.
- Firm, flat, waterproof, with a snug fit.
- Choose foam, spring or fibre for your budget and how much you need to wipe or wash it.
What the guidance says
- The Lullaby Trust recommends a new mattress for each baby where possible. A second-hand one should have a 100% waterproof cover, no rips, tears or water damage, no sagging, a good fit and a fire-resistant label.
- Mattresses: look for BS 7177:2008+A1:2011, and BS EN 16890:2017+A1:2021 for cot, travel cot and crib mattresses.
Related questions
What is a cot bed mattress?
A firm, flat mattress for a cot bed, usually 140 x 70cm, which carries on into the toddler-bed stage.
Shop at Baby Kingdom
- Obaby Natural Coir/Wool Mattress - 140 x 70cm
- Kidsaw Pocket Sprung Toddler Mattress 70 x 140cm
- Obaby Fibre Mattress - 140 x 70cm
- Obaby Eco Foam Mattress - 140 x 70cm
Check each product page for its exact dimensions, mattress size, age and weight limits and safety standards.
More advice
Can I use a second-hand cot mattress?Can I buy a second-hand travel cot mattress?How do I choose a Moses basket mattress?What travel cot mattresses does Baby Kingdom sell?Which baby mattress size do you need?Guide to mattress protectors: what to look forAll cot and baby mattresses advice →
Sources
- The Lullaby Trust: Baby mattresses and bedding (accessed 2026-10-21)
General information only, not medical advice. Always follow your product's instructions. If you are worried about your baby, contact your GP, health visitor or 111. In an emergency, call 999.