What mattress does a Moses basket need?
Short answer: Use a firm, flat, waterproof mattress in good condition, with no raised or cushioned edges, that fits the cot or Moses basket with no gaps. Use the size your frame lists.
- Use the mattress made for that basket, so it fits with no gaps.
- Use the basket on the floor or on its own stand, never on a raised surface like a sofa or table.
- Check the weight limit in the instructions.
What the guidance says
- Use a firm, flat, waterproof mattress in good condition, with no raised or cushioned edges, that fits the cot or Moses basket with no gaps.
- The Lullaby Trust says your baby's head should sink no more than a few millimetres into the mattress.
- 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 Moses basket?
A small, light, portable basket bed for newborns, often used on a stand.
Shop at Baby Kingdom
- Dorel Rowan Valley Flint 3in1 Crib WHTBLCK Wrail
- Scout Travel Crib, Cot and Playpen Complete Toy Bar
- CoZee XL Bassinet Accessory Pack
- Scout Travel Crib, Cot and Playpen Removable Crib Layer
Check each product page for its exact dimensions, mattress size, age and weight limits and safety standards.
More advice
How do I prevent flat head syndrome?What is the safest sleeping position for a baby?Can an 11 month old still sleep in a Moses basket?Can an 8 month old sleep in a cot?Bed-sharing risks quizYour 3 month's sleep space: a safe-sleep guideAll safe sleep and sleep spaces 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.