Komfi Unity Memory Deluxe Mattress
Mattress
Komfi Unity Memory Deluxe Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
17
Layers
3
Layer Details
- Neuform Memory Foam. A specialised Neuform memory foam layer sits at the top, cushioning you and lifting pressure off joints and muscles. It's also designed to reduce heat, which means a slightly cooler night than traditional memory foam tends to give.
- Reflex Foam. At the heart of the mattress, this soft, flexible reflex foam shapes around your contours. It absorbs movement and limits motion transfer, so a restless partner is less likely to wake you.
- Ecofoam. The base layer is Ecofoam, made from recycled foam and fully recyclable. It's a modest but genuine plus if sustainability matters to you.
Layer details from mattressonline.co.uk product page, September 2026.
- Fits most UK bedrooms: At 135 x 190cm (4ft 6in x 6ft 3in), it sits comfortably in rooms where a UK king would crowd the walls.
- Motion absorption where a double needs it: With 67.5cm each for two people sharing, the reflex foam core's ability to limit motion transfer matters, so a restless partner disturbs you less.
- A budget-friendly way to furnish a whole home: If you're kitting out several rooms at once, the low price in a double leaves more of your budget for everything else.
- Well suited to a guest room: Visiting couples get a proper shared bed, and the medium firm feel is a safe middle ground for guests you can't ask in advance.
- Easy to dress: Double sheets and a 200 x 200cm duvet are stocked everywhere, so keeping a spare set for guests costs little.
This size suits you if...
You share the bed and your room suits a double better than a king, you're furnishing a guest room for visiting couples, or you're setting up a first flat on a tight budget and want memory foam comfort without a big spend.
Consider another size if...
You and your partner both want more personal space than 67.5cm each and your room can take a bigger bed. We'd recommend the UK king instead, which is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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Is the Komfi Unity Memory Deluxe UK double good for couples?
Yes, with a condition. The double gives 67.5cm each for two people sharing, and the reflex foam core absorbs movement, so you feel less of your partner's shifting. At 17cm deep it's a little shallow for two heavier adults, though, who may press through to the firmer base. Lighter couples should find it comfortable.
What room size do I need for the Komfi Unity Memory Deluxe double?
We suggest at least 2.6m x 2.8m for a UK double, with around 3m x 3m the comfortable norm. That usually leaves space for bedside tables on both sides plus a wardrobe, which is exactly why the double remains the default choice for typical UK bedrooms.
Should I get the Komfi Unity Memory Deluxe in a double or a king?
The UK double is 15cm narrower and 10cm shorter than the UK king. If your room meets our suggested 2.7m x 2.9m for a UK king and you both like space to spread out, size up. If the room is tighter, or it's a guest bed, the UK double is the sensible pick.
Is the double Komfi Unity Memory Deluxe a good guest room mattress?
It's one of the better uses for it. The double accommodates visiting couples, the medium firm feel suits most guests, and the low price makes sense for a bed used a few weeks a year. The 17cm depth, a drawback for heavier everyday sleepers, matters far less in occasional use.
Will the double be hard to get upstairs?
At 135 x 190cm it's the widest size that still moves fairly easily through older terraces and tight new build landings, and as an all-foam mattress it flexes around turns better than a sprung one. Check your stairwell and door widths against the 4ft 6in x 6ft 3in dimensions before ordering.