Komfi Vitality Ultra Firm Super King Mattress in a Box
The Komfi Vitality Ultra Firm Mattress in a Box is a single thick layer of high-density reflex foam, which means you get firm, even support from edge to edge with no softer top layer to sink into.
- Very firm, flat sleeping surface
- Edge-to-edge support
- Removable cover, washable
£369.21
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 Vitality Ultra Firm Mattress in a Box
More available sizes
Mattress details
Mattress
Komfi Vitality Ultra Firm Mattress in a Box
Size
Firmness
Extra Firm
Construction
Eco-Friendly
Foam
Rolled
Depth (cm)
20
Layers
Layer Details
Key benefits
- Distance from a restless partner: You each get 90cm, which is 15cm more each than the UK king, so a partner who turns over all night is lying further away from you.
- The same support across the full width: The single foam layer means firmness doesn't change from edge to middle, so a child who ends up between you lies on the same flat surface you do.
- A cover that copes with family life: The cover is removable and washable, which means muddy paws or a spilt bedtime drink on a bed this size is a quick wash rather than a write-off.
- Fills a large room properly: At 180 x 200cm (6ft x 6ft 6in), it suits a period bedroom or generous master where a UK king can look a little undersized against the walls.
- Simple upkeep at this width: It's non-flip, so you only rotate it head to toe, which is a far easier job on a mattress this wide than heaving it over.
This size suits you if...
You share with a partner who tosses and turns and you want real space between you, or children and a dog regularly end up in your bed, and your bedroom is at least 3m x 2.9m.
Consider another size if...
Your bedroom is under 3m x 2.9m, or a door swing or bedside tables leave you too little room to walk round the bed. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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
Komfi Vitality Ultra Firm super king vs king: which should I buy?
The UK super king is 30cm wider than the UK king but the same length, giving each sleeper 15cm more. If a restless partner or a child joining you is the problem, the UK super king is the better fit. The UK king makes more sense in a tighter room: we suggest at least 2.7m x 2.9m for the UK king, against 3m x 2.9m here.
What size bedroom do I need for a UK super king Komfi mattress?
We suggest at least 3m x 2.9m, with around 3.5m x 3.2m feeling comfortable once you add bedside tables and space to walk round. In a loft conversion, the sloping ceiling usually decides which wall the bed goes against, so measure the full-height floor area rather than the whole room.
Is a super king big enough for two adults and a young child?
Two adults get 90cm each, so a small child who wanders in at night can usually fit between you without anyone being pushed to the edge. On this mattress the foam feels the same in the middle as at the sides, so whoever ends up in the centre has the same firm, flat support as everyone else.
What bedding fits a Komfi Vitality Ultra Firm super king?
You'll need super king sheets and a 260 x 220cm duvet. The mattress is 20cm deep, so choose fitted sheets that comfortably take that depth. Super king bedding costs more than the equivalent UK king sets, so add that to your budget before you decide which size to buy.
Can a large dog share a UK super king with two people?
With 90cm each for two people, a UK super king leaves more room for a dog than smaller sizes, particularly across the foot of the bed. The removable, washable cover helps with hair and muddy paws. If your dog is big and sprawls, measure how much space it actually takes before you assume everyone will fit.