What Bedding Does Your Child Need? An Age-by-Age Guide
This article offers general information and isn't a substitute for professional advice. Always follow current NHS and Lullaby Trust safer-sleep guidance, and speak to your health visitor or GP with any questions about your child's sleep.
Children's bedding is one of the few areas where the answer changes completely as they grow, and where getting it wrong in the first year is a safety matter rather than a comfort one. What's appropriate at two is actively unsafe at six months.
Here's what's suitable at each stage, and why. This is general information: always follow current NHS and Lullaby Trust safer-sleep guidance and ask your health visitor about anything specific to your child.
Birth to 12 Months: The Empty Cot
For the first year, the safest cot is the barest one. Safer-sleep guidance is for a firm, flat mattress, a fitted sheet, and nothing else. No pillow, no duvet, no cot bumpers, no positioners, no soft toys.
For warmth, use light blankets tucked in firmly no higher than your baby's chest, with their feet at the foot of the cot so they can't wriggle underneath, or a baby sleeping bag in the correct size and tog for the room. Sleeping bags have become the default for good reason, since they can't ride up over the face and they keep a baby covered no matter how much they move. Keep the room comfortably cool, usually cited as 16°C to 20°C, and dress your baby in adjustable layers rather than adding bedding.
The mattress itself matters more than anything you put on it. Our double-sided Hybrid® Cot Bed Mattress has a firm side designed for exactly this stage, keeping babies flat and straight to twelve months, and it's certified to BS EN 16890, the standard covering flatness, firmness and consistency of fit.
12 Months to 2 Years: Small Changes
After the first birthday, guidance relaxes somewhat, though not all at once. A pillow and a duvet become acceptable from around twelve months, but the advice is to keep both small, thin and firm rather than reaching for adult versions. A toddler pillow should be flat and firm, not the soft, high pillow an adult would want.
A low tog duvet, around 4.5 tog, is the usual starting point, since toddlers overheat easily and can't reliably push bedding off. Many parents keep using a sleeping bag well into this stage, which sidesteps the question entirely and stops the duvet ending up on the floor at two in the morning. This is also the point where the toddler side of a double-sided cot bed mattress comes into its own, giving a softer, more cushioned surface as they start moving around more.
2 to 4 Years: The First Proper Bed
Somewhere between two and three, most children move into a toddler bed or a small single, and the bedding scales up with them. A single duvet, a proper fitted sheet for the new mattress, and a low pillow suit this stage. Tog ratings around 4.5 for summer and 7 to 10.5 for winter cover most homes.
Practicality becomes the priority here. Choose washable, hard-wearing cotton over anything delicate, because this is peak spillage and accident territory, and buy two complete sets so you can strip a bed at midnight and remake it immediately. A waterproof mattress protector is close to essential during potty training, and a second one folded in the cupboard saves a great deal of misery.
4 to 8 Years: Settling Into Adult Patterns
By this stage bedding is essentially a smaller version of an adult's. A single duvet with seasonal togs, ordinary pillows in a low to medium loft, and whatever character duvet cover has been demanded that month.
Two things are worth attention. First, temperature: children sleep warm and often kick everything off, so a lower tog than you'd choose for yourself is usually right, and layering a blanket over a lighter duvet works better than one heavy duvet. Second, pillow height, since a child's shoulders are narrower than an adult's and a high pillow pushes their head forward. A flatter pillow suits most children well into primary school.
8 and Upwards: Growing Into Full-Size Bedding
From around eight, children can use adult-standard pillows and bedding without much adjustment, though pillow height should still follow their frame rather than adult defaults. This is when many families move a child from a small single to a full single or bunk arrangement.
Bunk and raised beds bring one specific requirement: the mattress must be shallow enough that the guard rail still sits high enough above the sleeping surface to work. This is why our Hybrid® Kids Mattress is a UK single at 16cm deep rather than adult depth, and it's worth checking the maximum depth your frame specifies and treating it as a limit rather than a guideline. Our mattresses designed for babies and children cover both stages, the cot bed years and the single-bed years, since the requirements genuinely differ.
What Applies at Every Age
A few things stay constant. Wash bedding weekly, and hot enough to manage dust mites, which matters more for children given how common childhood allergies are. Keep the room cool rather than warm, since children run warmer than adults and overheating disrupts sleep at every age.
Have spare sets, always, and preferably two, because the middle of the night is not when you want to discover the spare is still in the wash.
Check pillow and duvet suitability as they grow rather than assuming what worked last year still fits, since the thing that changes fastest with children is the size of the child. And let them have some say once they're old enough, because a child who likes their bedding goes to bed more willingly than one who doesn't, which is worth more to most households than any technical specification.
FAQs
Not before twelve months. Safer-sleep guidance is for a firm, flat mattress with a fitted sheet and nothing else in the cot for the first year. From around twelve months a small, firm, thin pillow and a low tog duvet become appropriate.
Around 4.5 tog for toddlers and for summer, rising to 7 to 10.5 tog for winter in most homes. Children sleep warmer than adults and often kick bedding off, so a lower tog than you'd choose for yourself, layered with a blanket, tends to work better.
A firm, flat mattress that fits the cot snugly, a fitted sheet, and either light blankets tucked in no higher than chest level with feet at the foot of the cot, or a correctly sized baby sleeping bag. Nothing else should be in the cot.
Low. Children's shoulders are narrower than adults', so a high pillow pushes the head forward and out of alignment. A flatter pillow suits most children well into primary school, and pillow height should follow their frame rather than adult defaults.
A shallow one, so the guard rail still sits high enough above the mattress surface to work as intended. Our Hybrid® Kids Mattress is a UK single at 16cm deep for this reason. Always check the maximum depth your bed frame specifies before buying.
This article offers general information and isn't a substitute for professional advice. Always follow current NHS and Lullaby Trust safer-sleep guidance, and speak to your health visitor or GP with any questions about your child's sleep.
