Silentnight Adventure Natural Kids' Single Mattress
The Silentnight Adventure Natural Kids' Mattress pairs Mirapocket springs with a British wool filling, which means support that moves with a wriggly child and a surface that suits every season.
- Support that adapts to wrigglers
- British wool for every season
- Waterproof for everyday spills
£429
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Silentnight Adventure Natural Kids' Mattress
More available sizes
Mattress details
Mattress
Silentnight Adventure Natural Kids' Mattress
Size
Firmness
Medium
Construction
Natural
Pocket Spring
Wool
Depth (cm)
28
Layers
2
Layer Details
British wool filling
An all-natural British wool filling with antibacterial properties. It suits every season, so your child should stay comfortable whatever the weather.
Mirapocket springs
Pocket springs that Silentnight says adapt to movement. That means support that follows a wriggly sleeper rather than working against them.
Layer details from swiftfurnitureworks.com product page, October 2026.
Key benefits
- Fits the frames children's beds use: Bunk beds, cabin beds and mid sleepers are almost always built for a UK single, so this mattress drops into the frame your child is most likely to have.
- Leaves room for everything else: At 3ft wide it keeps floor space free for a wardrobe and somewhere to play, and we suggest a room of at least 2.1m x 2.8m.
- Two beds in a shared room: If siblings share, a pair of UK singles leaves a walkway between them, so measure the room with both beds in place before you order.
- Easy, widely available bedding: Standard single sheets and a single duvet (135 x 200cm) fit, although the 28cm depth means you should check that a fitted sheet's pocket is deep enough.
- Spills stay on the surface: The waterproof finish copes with the drinks and accidents a child's single bed sees, which means fewer worries about the filling underneath.
This size suits you if...
You're buying for a child aged 3 or over who sleeps alone in a standard single frame, you're filling a bunk or cabin bed that takes a UK single, or two siblings share a room and you want matching beds that leave space to walk between them.
Consider another size if...
Your child is under 3, has a bed frame wider than 90cm, or is a tall teenager who already finds a 6ft 3in bed short. Silentnight makes this mattress in a UK single only, so no larger size is available.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Will the Silentnight Adventure Natural UK single fit a bunk bed?
The width and length match a standard UK single bunk at 90 x 190cm, but depth matters on any raised frame. This mattress is 28cm deep, and bunks, cabin beds and mid sleepers often set a maximum mattress depth so the safety rail stays high enough. Check the frame maker's guidance before you buy.
How much bedroom space does a UK single kids' mattress need?
For one UK single, we suggest a room of at least 2.1m x 2.8m. That leaves space beside the bed for a small desk or storage. In a loft conversion, a single's narrow footprint can sit under the slope, but make sure your child has clear headroom when sitting up in bed.
What sheets fit the Silentnight Adventure Natural single?
Standard single sheets fit the 90 x 190cm surface, and a single duvet at 135 x 200cm gives good overhang. The mattress is 28cm deep, so look for fitted sheets whose stated pocket depth is at least 28cm. Shallow fitted sheets tend to ping off the corners of a deeper single.
Is a UK single kids' mattress long enough for a teenager?
The UK single is 6ft 3in long, which leaves plenty of length for most children and many teenagers. A teenager who is already very tall may find their feet reach the end. The UK king is 10cm longer, but Silentnight doesn't make this mattress in that size, so you would need a different model.
Can two Adventure Natural singles fit in a shared children's room?
Yes, if the room is big enough for both beds and a walkway. Each mattress takes 90 x 190cm of floor. Measure the room with both bed frames marked out, then leave enough clearance between them for a child to get in and out of bed. The waterproof finish helps when two children share spills.