Silentnight Believe Memory Foam Kids' Single Mattress
The Silentnight Believe Memory Foam Kids' Mattress combines Miracoil springs for full-body support with a waterproof finish for everyday spills, which means a firm, supportive bed that copes with the mess of childhood.
- Supports the whole body
- Waterproof for everyday spills
- Firm feel for kids
£399

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Silentnight Believe Memory Foam Kids' Mattress
More available sizes
Mattress details
Mattress
Silentnight Believe Memory Foam Kids' Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Depth (cm)
23
Layers
Layer Details
Key benefits
- Leaves floor space for everything else: The UK single is 90cm wide, which means the bed takes up less of a small bedroom and leaves space for toy storage and a desk.
- Room for a growing child to stretch out: The 190cm length, or 6ft 3in, gives most children and teenagers enough room to sleep without their feet reaching the end.
- Copes with a child's room: The waterproof finish handles spilt drinks, and the hypoallergenic fillings suit a bedroom where you want to keep allergens down.
- Firm, level support: Silentnight rates it firm, which means a child sits on the surface rather than sinking into it, and the quilted top softens that slightly.
- Easy to dress: Standard single sheets fit, and a single duvet at 135 x 200cm covers the UK single comfortably.
This size suits you if...
You're furnishing a child's or teenager's bedroom where the bed has to share the floor with a desk and a wardrobe, you need a firm, wipeable mattress that can cope with spills, or your spare room also serves as a study and only has space for a narrow guest bed.
Consider another size if...
Your child likes a soft, sinking bed, or the bunk or cabin bed you're buying for has a maximum mattress depth below 23cm. Silentnight only makes this mattress in a UK single.
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FAQ's
Will the Silentnight Believe kids' single mattress fit a bunk bed?
It measures 90 x 190cm, the standard UK single footprint, so it should fit most single bunk frames. The deciding figure is the 23cm depth. Bunks and mid sleepers often set a maximum mattress depth to keep the safety rail high enough, so check the frame maker's guidance against 23cm before you buy.
How big does a bedroom need to be for a UK single bed?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves enough room to get in and out of bed and open drawers. In a loft conversion with a sloping ceiling, place the bed so a child can still sit up at the head end.
Is a UK single long enough for a teenager?
A UK single is 190cm long, which is 6ft 3in. That gives most teenagers room to lie flat without their feet hanging over the end. A very tall teenager may find it a little short, so measure them before choosing this mattress for a bed they'll keep for years.
What bedding fits the Silentnight Believe single mattress?
Standard UK single sheets fit the 90 x 190cm surface, and a single duvet at 135 x 200cm gives good coverage. Single bedding is the most widely stocked size, which helps when you're buying spares for a child's bed that needs frequent changes.
Is the Silentnight Believe UK single a good choice for a guest room?
It can work in a guest room, especially one that also serves as a study, because a UK single leaves space for a desk. Keep in mind that Silentnight designs it as a children's mattress and rates it firm, so adult guests who prefer a soft bed may find it a little too solid.






