Your 3 year's sleep space: a safe-sleep guide
Quick answers for this age
Can a 3 year old sleep in their own room?
Yes. Room-sharing guidance covers the first 6 months, and safer-sleep advice covers the first 12 months.
Can a 3 year old have a pillow?
The under-12-months guidance no longer applies. Many families wait until their child moves to a bed, then choose a toddler-sized pillow.
Can a 3 year old sleep with a duvet?
The under-12-months guidance no longer applies. Many families wait until their child moves to a bed, then choose a toddler-sized duvet.
Can a 3 year old have a cot bumper?
No. The Lullaby Trust advises removing cot bumpers: babies can get tangled in the ties and fabric, or climb on them and fall.
Can a 3 year old sleep with a soft toy?
The under-12-months clear-cot guidance no longer applies, and many families introduce a small comforter now.
Can a 3 year old sleep in a sleeping bag?
Yes. Choose the size for your child's weight and height, and a tog for your room temperature.
Can a 3 year old sleep in a cot?
Often, yes, until they climb out or outgrow it. Then a toddler bed or bed is the next step.
Can a 3 year old sleep in a cot bed?
Usually, yes, until they start climbing out. Then convert the cot bed to a toddler bed.
Can a 3 year old sleep in a toddler bed?
Yes, many children move to a toddler bed between about 18 months and 3 years, often once they climb out of the cot.
Can a 3 year old sleep in a travel cot?
Yes, if it is set up like a cot: rigid frame and base, its own firm mattress, no extra padding, and within the weight limit.
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.
Shop at Baby Kingdom
- Hoppekids Shorty Bunkbed
- Flair Alfie Wooden Toddler Bed White & Oak
- Kidsaw JCB 4CX Single Digger Bed with Scoop Toy Box Yellow
- Flair Aris Single Montessori Bed with 2 Storage Drawers
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)
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.