Your child has kicked off the duvet for the third time tonight, they’re sleeping in a nest of mismatched pillows, and the fitted sheet has pinged off two corners because it’s a single sheet on a bed that’s technically a “small single” — a size you didn’t know existed until you bought a bed from IKEA. Choosing bedding for children sounds simple until you’re standing in John Lewis trying to work out whether a 4.5 tog or a 7.5 tog is right for April, and whether the hypoallergenic label actually means anything.
In This Article
- Why Children’s Bedding Is Different
- Duvets: Choosing the Right TOG
- Duvet Fillings for Children
- Sheets and Mattress Protectors
- Pillows: When and What Type
- Bed Sizes and Bedding Dimensions
- Allergies and Hypoallergenic Bedding
- Washing and Care
- UK Buying Recommendations
- Frequently Asked Questions
Why Children’s Bedding Is Different
Children aren’t small adults when it comes to sleep. Their bodies regulate temperature less efficiently, they move far more during the night, and they have specific safety considerations that adult bedding doesn’t account for.
Temperature Regulation
Children overheat more easily than adults. Their surface-area-to-body-mass ratio is higher, meaning they gain and lose heat faster. A duvet that keeps you comfortable at 18°C might have your child sweating and waking at 2am. The Lullaby Trust recommends keeping a child’s room between 16-20°C and adjusting bedding weight accordingly.
Movement
Children roll, kick, spin, and somehow end up sideways by morning. Bedding needs to stay put despite this — which means fitted sheets that grip properly, duvets that aren’t so heavy they restrict movement, and pillow placement that accounts for a child who treats their bed like a gymnastics mat.
Growing Out of Things
Children grow through bed sizes — cot, toddler bed, single, and sometimes small single in between. Each transition means new bedding dimensions. Buying quality basics that last through a size transition saves money compared to replacing cheap bedding every six months.
Duvets: Choosing the Right TOG
TOG (Thermal Overall Grade) measures how well a duvet retains heat. Higher TOG = warmer. For children, getting this right matters more than for adults because they can’t easily adjust their own bedding during the night.
TOG Ratings for Children
- 4.0-4.5 TOG — summer duvet. Right for rooms above 20°C and warm summer nights. Light enough that overheating is unlikely
- 7.0-7.5 TOG — spring and autumn. The most versatile single duvet for UK bedrooms kept at 18-20°C
- 9.0 TOG — cooler rooms in winter. Suitable for rooms at 16-18°C
- 10.5 TOG — the warmest common children’s duvet. For cold bedrooms without central heating or during particularly cold spells
All-Season Duvets
Two duvets (typically 4.5 TOG and 9.0 TOG) that button together to make a 13.5 TOG combination. Use the lighter one alone in summer, the medium one alone in spring/autumn, and both together in the depths of January. They’re more expensive upfront (about £30-50 from John Lewis or Dunelm) but cheaper than buying three separate duvets.
For our full TOG guide covering every scenario, see our guide to choosing the right TOG for your child’s room temperature.
When to Move from a Sleeping Bag to a Duvet
Most children transition from a baby sleeping bag to a duvet between 18 months and 3 years. The child should be in a bed (not a cot with sides) and able to pull the duvet on and off themselves. There’s no rush — if the sleeping bag still fits and works, keep using it.
Duvet Fillings for Children
Hollowfibre (Synthetic)
The most common filling for children’s duvets. Polyester fibres are blown into hollow tubes that trap air for insulation.
- Pros: machine washable at 60°C (kills dust mites), fast drying, hypoallergenic, cheap (about £12-25 for a single)
- Cons: less breathable than natural fillings, can feel clammy on hot nights, loses loft faster (replace every 2-3 years)
- Best for: most families. Washability is the key advantage — children’s duvets need frequent washing
Microfibre
A finer synthetic filling that feels closer to natural down. Softer and more breathable than standard hollowfibre.
- Pros: soft hand feel, lighter weight for the same warmth, machine washable
- Cons: slightly more expensive (about £20-35), still synthetic
- Best for: children who find hollowfibre too heavy or stiff
Natural Fillings (Down, Feather, Wool)
Generally not recommended for children under 5 due to allergy risk and difficulty washing. After that age:
- Duck or goose down — luxuriously soft, excellent temperature regulation, but needs professional cleaning or a very large washing machine. About £40-80 for a single
- Wool — naturally temperature-regulating, moisture-wicking, and resistant to dust mites. Machine-washable wool duvets exist (The Woolroom, about £60-90). Wool is our top choice for children with allergies or temperature regulation issues. Our guide to duvet fillings explained covers all options in detail
Sheets and Mattress Protectors
Fitted Sheets
Buy fitted, not flat. Children kick flat sheets off within minutes. A properly fitted sheet stays put all night.
Material options:
- Polycotton (50/50 or 60/40) — the practical choice. Wrinkle-resistant, quick-drying, cheaper. About £5-10 per sheet from Dunelm or Primark
- 100% cotton (200+ thread count) — softer, more breathable, better for sensitive skin. Wrinkles more and takes longer to dry. About £10-20 from John Lewis or M&S
- Jersey cotton — stretchy, T-shirt-feel fabric that grips the mattress brilliantly and never needs ironing. Children find it comfortable and it stays put even on the most vigorous sleeper. About £8-15
Mattress Protectors
Non-negotiable for children’s beds. Accidents happen — whether it’s nighttime wetting, spilled drinks, or illness. A waterproof mattress protector saves the mattress.
- Waterproof terry towelling — soft fabric on top, waterproof membrane underneath. About £8-15 from Amazon UK or Dunelm. This is the standard and it works
- Quilted waterproof — thicker, adds a layer of cushioning. About £15-25. More comfortable but takes longer to dry
- Disposable bed mats — placed on top of the sheet for nighttime wetting phases. Useful as a backup but not a replacement for a proper protector
Top tip: buy two mattress protectors and two fitted sheets. When one set is in the wash (or soaking at 3am after an accident), the other set goes straight on. I learned this after standing in a cold bathroom at 4am trying to dry a single sheet with a hairdryer.
Pillows: When and What Type
When to Introduce a Pillow
The NHS and Lullaby Trust recommend no pillow until at least 12 months. Most health visitors suggest waiting until 2 years or when the child moves to a bed. There’s no rush — many toddlers sleep perfectly well without a pillow.
Choosing a Pillow
Children’s pillows should be:
- Flat — not as thick as an adult pillow. A child’s head-to-shoulder proportion is different, and a thick pillow pushes the head forward uncomfortably
- Firm enough to support but soft enough to be comfortable. The pillow should compress to about 5-7cm under the weight of the child’s head
- Machine washable — same reasoning as duvets. At 60°C to kill dust mites
Recommendations:
- The Fine Bedding Company Junior Washable Pillow — about £10 from John Lewis. Specifically designed for children, low profile, machine washable
- Silentnight Safe Nights Pillow — about £8 from Argos or Amazon UK. Hypoallergenic, low profile, widely available
When to Move to an Adult Pillow
Most children switch to a standard adult pillow between ages 8-10, when their head and shoulder proportions approach adult ratios. If your child complains about neck discomfort or the pillow feels too small, it’s time to upgrade.
Bed Sizes and Bedding Dimensions
Getting the right size sounds obvious but UK bed sizing has quirks:
UK Children’s Bed Sizes
- Cot bed — 140 × 70cm. Used from birth to about 3-4 years. Cot bed bedding is a specific size — standard single won’t fit
- Toddler bed — same mattress size as a cot bed (140 × 70cm). Same bedding
- Small single — 190 × 75cm. Common in IKEA ranges and some British bunk beds. Standard single bedding is slightly loose but works. Some brands sell “small single” specific sheets
- Standard single — 190 × 90cm. The standard UK child’s bed from about age 4 onwards. All “single” bedding fits this
Common Sizing Mistakes
- IKEA beds use European sizes. An IKEA single mattress is 200 × 90cm — 10cm longer than a UK single. Standard UK fitted sheets may not reach the corners. Buy IKEA-specific bedding or European-sized sheets
- Bunk bed mattresses are often thinner (15cm vs 20cm+). Deep-pocket fitted sheets swim around a thin mattress. Look for sheets labelled “standard depth” or check the pocket depth on the label
Allergies and Hypoallergenic Bedding
Dust Mites: The Real Issue
Dust mites are the most common bedroom allergen, and they thrive in bedding — warmth, moisture, and shed skin cells create their ideal environment. Symptoms include sneezing, runny nose, itchy eyes, and worsening of eczema and asthma.
What “Hypoallergenic” Means
On bedding labels, “hypoallergenic” simply means the materials are less likely to trigger allergies. It’s not a regulated term — any synthetic duvet can claim to be hypoallergenic. What actually matters is:
- Washing at 60°C — this is the temperature that kills dust mites. If the bedding can’t handle 60°C washes, it’s not truly anti-allergy
- Encasement covers — zippered covers on the mattress and pillows that create a barrier between dust mites and the sleeper. More effective than any “hypoallergenic” fill. About £10-20 from allergy specialists like Allergy Best Buys
- Frequent washing — wash sheets weekly and duvets every 2-3 months at 60°C
For Asthmatic Children
If your child has diagnosed asthma or severe allergies, invest in proper anti-allergy encasement covers for the mattress, pillows, and duvet, rather than relying on “hypoallergenic” labelling. The covers create a physical barrier that actually prevents dust mite allergens reaching your child. Combine with 60°C washing and bedroom ventilation. Our guide to how often to wash bedding covers frequency recommendations.
Washing and Care
Washing Schedule
- Sheets and pillowcases — weekly. At 60°C if allergies are a concern, 40°C otherwise
- Mattress protector — every 2-4 weeks, or immediately after accidents
- Duvet — every 2-3 months. Synthetic duvets wash in a standard 8kg machine. Down duvets may need a larger machine or laundrette
- Pillow — every 2-3 months. Most children’s pillows are machine washable. Check the label
Drying
Duvets take ages to dry — a synthetic single duvet needs 2-3 hours in a tumble dryer or a full day on a line in dry weather. In the UK’s climate, a tumble dryer is almost essential for duvet washing. Under-dried duvets develop mould and smell musty.
Tip: put two or three clean tennis balls in the dryer with the duvet. They agitate the filling, preventing it from clumping and helping it dry evenly.
Replacement Schedule
- Synthetic duvets — every 2-3 years. The filling compresses and loses its insulating ability
- Natural duvets — every 5-8 years with proper care
- Pillows — every 1-2 years for synthetic, 3-5 years for natural. The fold test: fold the pillow in half. If it doesn’t spring back, replace it
- Mattress protector — when the waterproof layer starts to crack or it no longer smells fresh after washing
UK Buying Recommendations
Best Duvet: Silentnight Safe Nights 4.5+9 TOG All-Seasons (about £25-30)
Two duvets that button together. Machine washable at 40°C, hypoallergenic hollowfibre, and covers every temperature from summer to winter. Available from Argos, Amazon, and most bed shops.
Best Sheets: M&S Pure Cotton Jersey Fitted Sheet (about £10-12)
Jersey cotton grips the mattress, feels soft against skin, and never needs ironing. M&S quality lasts through hundreds of washes. Available in single and cot bed sizes.
Best Mattress Protector: Hippychick Mattress Protector (about £15-20)
Terry towelling top, breathable waterproof membrane underneath. Stays cool, doesn’t rustle, and genuinely waterproof. The gold standard for children’s mattress protectors. Available from John Lewis, Amazon, and direct.
Best Pillow: Silentnight Safe Nights Pillow (about £8)
Low profile, hypoallergenic, machine washable. Does the job without overcomplicating it. From Argos or Amazon UK.
Frequently Asked Questions
What TOG duvet should a child have in winter? For a bedroom kept at 18-20°C with central heating, a 7.5 TOG duvet is usually sufficient. For colder rooms (16-18°C), a 9 TOG is better. If the room drops below 16°C regularly, consider a 10.5 TOG or an all-seasons combination. Dress the child in light pyjamas and adjust the duvet rather than adding extra blankets.
Is a higher thread count always better for children’s sheets? Not necessarily. Thread count above 200 is fine for softness and durability. Extremely high thread counts (400+) are wasted on children who spill, sweat, and need sheets washed weekly. A 200-thread-count pure cotton sheet at £10 outlasts and outperforms a cheap 800-thread-count polycotton sheet at £15.
Should I use a duvet or blankets for a toddler? Either works. A lightweight duvet (4.0-4.5 TOG) is easier to manage and stays in place better than blankets. If using blankets, layer them so you can adjust warmth by removing layers. Tuck blankets in firmly at the foot of the bed so they don’t ride up over the child’s face.
How do I stop the fitted sheet coming off the mattress? Sheet suspenders (elastic clips that attach under the mattress corners, about £5 from Amazon) keep even loose sheets in place. Alternatively, buy deep-pocket fitted sheets or jersey cotton sheets, which stretch and grip better. Check that you’re buying the correct size — a single sheet on a small single mattress will always be loose.
Can children use weighted blankets? Weighted blankets are not recommended for children under 3 or children who weigh less than 15kg. For older children, a weighted blanket should be no more than 10% of the child’s body weight. Consult your GP or occupational therapist before using one, especially for children with additional needs.