Do I need a cot?
Think about your space, budget and how long you will use it.
- Check the internal size and buy a mattress that fits with no gaps.
- Adjustable base heights let you lower the mattress as your baby learns to sit and stand.
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.
- Keep the cot clear: no pillows, duvets, cot bumpers, loose blankets, soft toys, pods, nests, wedges or anything to keep your baby in place.
- Place the cot away from radiators, direct sunlight and blind cords.
Related questions
What is a cot?
A framed baby bed with fixed sides, usually taking a 120 x 60cm mattress.
Shop at Baby Kingdom
Check each product page for its exact dimensions, mattress size, age and weight limits and safety standards.
More advice
Sources
- The Lullaby Trust: Baby mattresses and bedding (accessed 2026-10-21)
- NHS: Sudden infant death syndrome (SIDS) (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.