Komfi Vitality Max Single Mattress in a Box
The Komfi Vitality Max Mattress in a Box has a Maxcool breathable top layer built to move air and regulate temperature, which means you should find it easier to stay comfortable if you tend to overheat.
- Cooling layer helps you sleep cooler
- Medium feel suits most sleepers
- Removable cover that washes easily
£296.71
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Komfi Vitality Max Mattress in a Box
More available sizes
Mattress details
Mattress
Komfi Vitality Max Mattress in a Box
Size
Firmness
Medium
Construction
Foam
Rolled
Depth (cm)
30
Layers
3
Layer Details
Next Gen 4G Maxcool Layer
A breathable layer engineered to maximise airflow and regulate body temperature. It should help you avoid overheating through the night.
Ultra Soft Touch Layer
A cushioned layer that supports comfort and spinal alignment. It adds a softer feel under you without losing support.
Responsive Support Layer
A base layer that provides balanced support and maintains body positioning. It keeps you held evenly and stops the softer layers above from sinking too far.
Layer details from bedsonlegs.co.uk product page, October 2026.
Key benefits
- Fits a crowded child's room: At 3ft x 6ft 3in, the UK single leaves floor space for toy storage and a desk, which means the bed doesn't take over the whole room.
- Two can sit side by side: Its narrow width means a pair of UK singles can fit in a shared children's room or a guest room, with a walkway left between them.
- Easy to keep clean: The knitted cover comes off and can be washed, which is a real help on a child's or teenager's bed where spills happen.
- Cooler top layer for warm sleepers: A breathable top layer is designed to improve airflow, so a teenager who tends to wake up hot may find it a little more comfortable.
- Simple care routine: You rotate it rather than flip it, which matters on a UK single that a child or a guest won't think to maintain.
This size suits you if...
You sleep alone in a smaller bedroom and want space left for a desk or wardrobe, you're furnishing a child's or teenager's room, or you need a guest bed that can sit beside another UK single in a spare room.
Consider another size if...
You want to stretch out, or a partner sometimes shares the bed. The UK small double would suit you better, at 30cm wider and the same length; we suggest at least 2.4m x 2.8m for it.
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FAQ's
Will the Komfi Vitality Max UK single fit a bunk bed or mid sleeper?
It depends on the frame. The mattress is 30cm deep, and raised frames such as bunks, cabin beds and mid sleepers usually set a maximum mattress depth so the safety rail stays high enough. Check that figure in the frame maker's guidance before buying. If the frame allows less than 30cm, choose a shallower mattress for that bed.
What size room do I need for a Komfi Vitality Max UK single?
We suggest allowing at least 2.1m x 2.8m of floor space. That leaves room to walk around the bed and open a wardrobe, so the UK single works well in box rooms and in spare rooms that also serve as an office.
Is a UK single Komfi Vitality Max long enough for an adult?
At 190cm long (6ft 3in), the UK single suits most adults. If you're particularly tall, the UK king and UK super king are both 10cm longer than the UK single, although each needs a much larger room: we suggest at least 2.7m x 2.9m for the UK king.
Should I get the Komfi Vitality Max in a single or small double?
Choose the UK single if floor space matters most or the bed is for a child. The UK small double is 30cm wider and the same length, which gives a solo adult more room to turn over. We suggest at least 2.4m x 2.8m for the UK small double.
What bedding fits a UK single Komfi Vitality Max?
Standard UK single fitted sheets suit the 90 x 190cm surface, and a single duvet at 135 x 200cm gives enough overhang. Because the mattress is 30cm deep, look for fitted sheets with deep pockets so the corners stay tucked under.