MattressNextDay Classic Memory Foam Mattress
Mattress
MattressNextDay Classic Memory Foam Mattress
Size
Firmness
Construction
Depth (cm)
20
Layers
3
Layer Details
- EcoFoam®. A thick layer of 100% recycled and re-engineered foam that responds to your body's natural warmth, moulding to your shape. In practice this means pressure relief exactly where you need it, at your hips and shoulders.
- Reflex Foam. A firm supportive layer that gives the mattress its medium firm feel, which means your spine stays aligned rather than dipping. It's what provides the orthopaedic-style support.
- Memory Foam. A final cushioning layer of memory foam sits nearest to you. It adds a snuggly, softer surface feel over the firmer core.
Layer details from mattressnextday.co.uk product page, September 2026.
- Fits standard single frames: At 90 x 190cm it matches the usual UK single bed, bunk and cabin frame, which means you can replace a worn mattress without buying a new base.
- Frees up floor in a busy room: A child's bedroom rarely holds only a bed, and a 3ft width leaves space for the wardrobe, desk and toy boxes to live alongside it.
- Two can fit in a shared room: If siblings share a bedroom, two UK singles with a clear path between them is a far easier layout than squeezing in anything wider.
- Workable under a sloping ceiling: In a loft conversion, a narrow single footprint can sit tucked under the slope, leaving the full-height part of the room for standing and dressing.
- Supportive for a growing teenager: The Reflex Foam core gives a medium firm feel, which means a teenager's spine stays level rather than dipping as they grow heavier.
- A slimmer profile for raised beds: At 20cm deep it is slimmer than many deep-fill designs, although you should still check your bunk or mid sleeper's maximum mattress depth before ordering.
This size suits you if...
You're furnishing a child's or teenager's room where the bed has to share space with a desk and storage, or you sleep alone and like a supportive, medium firm foam feel. It also suits a spare room that serves as a home office most of the week, as long as we suggest you allow at least 2.1m x 2.8m of floor space.
Consider another size if...
You share the bed with a partner, or you sleep alone and like room to sprawl. We'd recommend the UK double instead, which gives 67.5cm each for two sharing and needs at least 2.6m x 2.8m.
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Can I put the MattressNextDay Classic UK single on a cabin or mid sleeper bed?
The 90 x 190cm footprint matches standard UK single raised frames. The mattress is 20cm deep, so check the frame maker's maximum mattress depth first, as raised beds set a limit to keep the guard rail high enough above the sleeping surface.
How much bedroom space does a MattressNextDay Classic single need?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk around the bed and open drawers, which matters most in a child's room or a box room doing a second job as a study.
Is the MattressNextDay Classic UK single too firm for a child?
It has a medium firm feel, and lighter sleepers sink into foam less, so a small child who sleeps on their side may find it a little firm. Back sleepers and older, heavier teenagers are more likely to find the support comfortable.
UK single or UK double MattressNextDay Classic for a teenager?
The UK single is 45cm narrower than the UK double but the same length. If the bedroom is compact, the UK single keeps floor space clear. If there is room, the UK double needs at least 2.6m x 2.8m and gives a growing teen more space to turn.
Is a UK single MattressNextDay Classic long enough for a tall adult?
The UK single is 190cm long, or 6ft 3in. Taller sleepers whose feet reach the end may prefer the UK king, which is 10cm longer, though it is also far wider and we suggest at least 2.7m x 2.9m of room for it.