MattressNextDay Ortho Support Foam Single Mattress
The MattressNextDay Ortho Support Foam Mattress is an extra firm, all-foam orthopaedic mattress made in the UK.
- Extra-firm feel suits heavier builds
- Helps keep your spine aligned
- 5-year guarantee
£299
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MattressNextDay Ortho Support Foam Mattress
More available sizes
Mattress details
Mattress
MattressNextDay Ortho Support Foam Mattress
Size
Firmness
Extra Firm
Construction
Foam
Rolled
Orthopaedic
Depth (cm)
20
Layers
2
Layer Details
Knitted Cover
A soft knitted cover that's breathable, which means heat can escape rather than build up around you. It helps keep you at an even temperature all night.
Reflex Foam
Reflex foam is a dense, responsive foam that conforms to the shape of your body. It offers tailored support to help improve your spinal alignment and posture.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- Leaves the floor free: At 90cm wide, the UK single leaves space for a desk, wardrobe or toy storage, and we suggest allowing at least 2.1m x 2.8m of floor space.
- A known depth for raised frames: The 20cm depth gives you a clear figure to check against a bunk, cabin or mid sleeper's stated limit, so you can confirm the side rail still does its job.
- Firm support for older teens: Teenagers who sleep on their back or front, particularly heavier builds, get an even, solid surface from the reflex foam rather than a bed that dips in the middle.
- Fits under a sloping ceiling: In a loft conversion, the narrow footprint lets the bed run lengthways beneath the slope, keeping the full-height part of the room clear for standing and dressing.
- Room for a desk as well: A spare room that serves as an office by day can take a UK single along one wall, leaving the desk and chair with space to breathe.
This size suits you if...
you sleep alone and like a very firm bed, your room is short on floor space or sits under a sloping loft ceiling, or you're furnishing a teenager's room or a raised frame that accepts a 20cm deep mattress.
Consider another size if...
you share the bed with a partner, or you want more room to move than 90cm allows. We'd recommend the UK double instead: it gives 67.5cm each for two sharing, and we suggest at least 2.6m x 2.8m.
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FAQ's
Will the Ortho Support UK single fit a bunk bed or mid sleeper?
It measures 90 x 190cm, the standard UK single footprint that most bunk and mid sleeper frames are built around. It's 20cm deep, and raised frames usually state a maximum mattress depth so the side rail stays high enough. Check that figure in the frame maker's guidance before buying.
Is the MattressNextDay Ortho Support UK single too firm for a child?
It may be. The mattress is extra firm, and lightweight sleepers can find it hard on the shoulders and hips, which applies to many younger children. It tends to suit older, heavier teenagers who sleep on their back or front better than a small child who curls up on one side.
How much room do I need for a UK single Ortho Support mattress?
We suggest allowing at least 2.1m x 2.8m of floor space for the UK single. That leaves enough clearance to get in and out comfortably and open a wardrobe or drawers, which matters in a box room or a child's bedroom holding storage and a desk.
UK single or UK small double Ortho Support for a teenager?
The UK single is 30cm narrower than the UK small double, and both are the same length. If your teenager sprawls or the room can spare it, the UK small double gives more width, and we suggest at least 2.4m x 2.8m for it. The UK single keeps more floor free.
Is a UK single long enough for a tall adult?
The UK single is 190cm long, or 6ft 3in. If your feet already reach the end of a standard bed, the UK king is 10cm longer, although it's a much wider bed and we suggest at least 2.7m x 2.9m of floor space for it.