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Simba Hybrid Kids Mattress
More available sizes
Mattress details
Mattress
Simba Hybrid Kids Mattress
Size
Firmness
Medium Firm
Construction
Hybrid
Depth (cm)
16
Layers
4
Layer Details
Simbatex cooling foam
An airy, open-structure foam infused with graphite, sitting at the top of the mattress. It gives a cooler feel on the surface, which helps if your child tends to get warm in bed.
Aerocoil pocket springs
Titanium alloy Aerocoil micro pocket springs that compress individually. Each one responds to movement on its own, so the mattress adjusts as your child shifts and turns.
High-density foam layer
A firmer foam layer that gives the mattress its core stability. It also carries support right up to the edges, so the sides hold up when your child sits or climbs on them.
CertiPUR foam base
A zoned CertiPUR foam base that targets pressure points. It gives the layers above a steady foundation and adds some pressure relief where growing bodies need it.
Layer details from simbasleep.com and mattressnextday.co.uk product pages, October 2026.
Key benefits
- A footprint that leaves the room usable: At 90cm wide, the bed takes up one wall and leaves space for a desk, wardrobe and toy storage in a typical child's room.
- A slim profile for raised frames: The 16cm depth sits comfortably below the safety rails on most bunk beds and mid sleepers, where a taller adult mattress would be a hazard.
- Length that lasts into the teens: The 190cm length is the same as a UK double, so a growing child won't outgrow the bed itself for years.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm single duvet fit, and both are the most widely stocked and affordable bedding of any size.
- Works in twos: For siblings sharing, two UK singles plus a walkway fit into rooms where anything wider simply wouldn't.
This size suits you if...
You're buying for a child's bedroom where the bed has to share the floor with a desk, wardrobe or toy storage, you need a slimmer mattress for a bunk bed or mid sleeper, or you're setting up a spare room that a young guest uses occasionally. Allow at least 2.1m x 2.8m of floor space and the UK single fits with room to move around it.
Consider another size if...
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FAQ's
What size room do I need for the Simba Hybrid Kids Mattress in a UK single?
We suggest allowing at least 2.1m x 2.8m of floor space. That gives you the 90 x 190cm mattress plus enough clearance to walk around the bed and open drawers or wardrobe doors. In a child's room you'll likely want more than the minimum, since the bed usually competes with storage and a desk.
Will the Simba Hybrid Kids Mattress UK single fit a bunk or mid sleeper frame?
In most cases, yes. The 90 x 190cm footprint matches the standard UK bunk and mid sleeper base, and the 16cm depth means it should sit below the safety rail, which taller mattresses often don't. Do check your frame's stated mattress size and maximum depth before ordering, as a few frames use non-standard bases.
Is the UK single Simba Hybrid Kids Mattress big enough for a teenager?
For most teenagers, yes. The UK single is 90cm wide and 190cm long, the same length as a UK double, so height is rarely the problem. Width is the more personal question: a restless sleeper or a broad-shouldered older teen may start to feel a little confined, but the UK single remains the standard size for teens across the UK.
Can I get the Simba Hybrid Kids Mattress in a size bigger than a single?
No, the UK single is the only size Simba makes this mattress in. For comparison, a UK small double is 30cm wider at the same length, but you'd need a different mattress to get it. If your child is moving to a bigger bed, you'll be shopping outside the kids' range.
Where can I buy the Simba Hybrid Kids Mattress in a UK single?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so it's worth checking back before you commit. Simba publishes little detail about this mattress's construction and firmness, so if those matter to you, ask your chosen retailer to confirm before you order.