Komfi Unity Visco Ortho Single Mattress in a Box
The Komfi Unity Visco Ortho Mattress in a Box pairs a 2 cm memory foam top layer with a 13 cm ecofoam base, which means gentle contouring over a firm, steady feel underneath.
- Firm feel for back sleepers
- Gentle contouring at hips & shoulders
- Washable cover, hypoallergenic foam
£146.95
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.
Komfi Unity Visco Ortho Mattress in a Box
More available sizes
Mattress details
Mattress
Komfi Unity Visco Ortho Mattress in a Box
Size
Firmness
Firm
Construction
Eco-Friendly
Foam
Memory Foam
Orthopaedic
Rolled
Depth (cm)
15
Layers
2
Layer Details
Memory foam top layer
A 2 cm layer of Neuform memory foam. It gives gentle contouring that eases pressure on your shoulders, hips and joints, without making the mattress feel soft.
Ecofoam base layer
A 13 cm base of high density ecofoam, made from recycled, re-engineered foam. It provides the firm, steady support that defines how this mattress feels.
Layer details from bestbedsdirect.co.uk product page, October 2026.
Key benefits
- Fits small rooms: We suggest allowing at least 2.1m x 2.8m for a UK single, which leaves space for a desk, a wardrobe or toy storage in a child's room.
- Slim enough for raised frames: At 15cm deep, it sits lower than many mattresses, which means it has a better chance of fitting under a bunk or cabin bed's safety rail, so check your frame's maximum depth first.
- Steady support for growing backs: The firm ecofoam base keeps the surface flat, which suits children and teens who mostly sleep on their backs, while the thin memory foam top softens the feel slightly.
- Easy care in a child's room: The cover is removable and washable, a sensible feature on a mattress likely to see spilt drinks and the occasional accident.
- Two side by side for guests: A pair of UK singles lets a spare room sleep two friends or siblings separately, with a walkway left between them.
This size suits you if...
You're buying for a child, teenager or student who sleeps alone, you need a mattress shallow enough for a bunk, cabin or mid sleeper frame, or you're kitting out a compact spare room or loft conversion where a wider bed would crowd the floor.
Consider another size if...
You share your bed, or you're an adult who sprawls and wants more room to turn. We'd recommend the UK small double instead, which is 30cm wider; we suggest at least 2.4m x 2.8m for it.
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 Komfi Unity Visco Ortho UK single fit a bunk bed or mid sleeper?
The UK single matches the standard 90 x 190cm footprint most bunk, cabin and mid sleeper frames are built around. Raised frames usually set a maximum mattress depth so the safety rail stays high enough, so compare the 15cm depth with your frame maker's guidance before buying.
What size room do I need for a UK single Komfi Unity Visco Ortho?
We suggest at least 2.1m x 2.8m of floor space for a UK single. That leaves room to get in and out comfortably, plus space for a wardrobe or desk, which matters in a box room or a child's bedroom.
Is a UK single Komfi Unity Visco Ortho long enough for a tall adult?
The UK single is 190cm long. If you're tall and your feet tend to reach the end of the bed, the UK king is 10cm longer, although it's also much wider and we suggest at least 2.7m x 2.9m for it.
What bedding fits a Komfi Unity Visco Ortho single?
Standard UK single fitted sheets suit the 90 x 190cm size, and a single duvet measuring 135 x 200cm gives enough overhang. Single bedding is easy to find on the high street, handy if you're buying spare sets for a child's room.
Can I put two Komfi UK single mattresses in a guest room?
Yes, two UK singles are a flexible option for a spare room that hosts siblings or friends who'd rather not share. The firm feel suits most guests who sleep on their backs, although lighter side sleepers may find it a little unyielding for longer stays.