Firmness
Medium Firm
Type
Memory Foam
Depth (cm)
17
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
5
Price Range
£149 to £239
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
This is a sensible pick if you want memory foam comfort without spending a lot. The Neuform top layer is designed to lift pressure off joints and reduce heat, which means less of the warm, stuck feeling memory foam is sometimes known for. The reflex foam core absorbs movement, so if you share a bed you should feel less disturbance when your partner shifts. There's also an environmental angle: the base is Ecofoam made from recycled foam and is itself fully recyclable. Mattress Online lists a 100-night trial and a 5 year guarantee with it, which gives you a decent safety net, though those are that retailer's terms rather than Komfi's own.
Key Features & what's inside
- 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.
Who's it NOT for?
At 17cm deep, it's a little shallow for heavier adults, who may press through to the firmer base. If you love a plush, sink-in feel, the medium to firm rating will likely feel harder than you'd like, and some owners do describe it as very firm. Fans of a springy, traditional pocket-sprung feel should look elsewhere too.
Komfi Unity Memory Deluxe Mattress
How firm is the Komfi Unity Memory Deluxe mattress?
It's rated medium to firm. In practice the memory foam top gives some initial cushioning before you reach the firmer support beneath. Some owner reviews describe it as very firm, so lightweight side sleepers may find it a touch too solid for their liking.
Does the Komfi Unity Memory Deluxe come with a trial or guarantee?
Mattress Online lists a 100-night trial and a 5 Year Guarantee with this mattress. These are the retailer's own terms, so if you buy elsewhere, check what that seller offers before ordering.
What sizes is the Komfi Unity Memory Deluxe available in?
It comes in UK Single, Small Double, Double and King, with prices ranging from £149 to £239 depending on the size you choose.
Is the Komfi Unity Memory Deluxe good for hot sleepers?
It should be better than average for a memory foam mattress. The Neuform top layer is designed to reduce heat for a cooler sleeping environment, though all-foam mattresses generally still sleep warmer than sprung ones, so very hot sleepers may want a hybrid instead.
How is the Komfi Unity Memory Deluxe delivered?
Mattress Online offers free next day weekday delivery, or free weekday or weekend delivery ordered up to 60 days ahead, with a two-hour slot and a call on delivery day. Room delivery costs £20.00 and old mattress recycling £35.00. These are the retailer's services, not Komfi's.
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