Komfi Unity Comfort Mattress in a Box
The Komfi Unity Comfort is a mattress in a box, which means it arrives rolled and compressed for easier delivery and manoeuvring up the stairs.
- Handy for a spare room
- Covers smaller bed frames well
- Boxed for easy handling
£112.32
Get the lowest price we've found
The Komfi Unity Comfort sits at the affordable end of the market. You can choose from five UK sizes: Small Single, Single, Small Double, Double and King. Detailed specifications for this model aren't published, so if construction and materials matter to you, it's sensible to check the retailer's listing carefully before ordering.
Mattress specifications
Firmness
Medium
Type
Foam
Depth (cm)
Number of Layers
2
Trial Period (nights)
Warranty (years)
Price Range
£112 to £154
Best Sleeping Position(s)
Side Sleeping
Back Sleeping
Combination Sleeping
Certifications
Assessed from Komfi's product page, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Price is the main draw here. The Unity Comfort costs less than many rolled mattresses, which makes it a reasonable option if you're furnishing a spare room or working to a tight budget. The size range covers smaller frames well, with Small Single and Small Double options alongside the standard Single, Double and King. The boxed format also means delivery is straightforward rather than a two-person struggle.
Key features & layer details
Reflex foam top layer
A 4cm layer of soft reflex foam sits at the top. It gives the surface a softer, cushioned feel, which suits the medium firmness overall.
Ecofoam base
A 10cm foundation of Ecofoam, a re-engineered foam that is 100% recycled. It forms the bulk of the mattress and supports the softer layer above, and it also gives a lower carbon footprint than standard foam.
Layer details from komfi.com and archerssleepcentre.co.uk product pages, October 2026.
Best suited for?
Budget buyers
Sitting at the affordable end of the market, it costs less than many rolled mattresses, so it suits anyone working to a tight budget.
Guest rooms
Its low cost makes it a reasonable pick for furnishing a spare room, and the boxed delivery means no two-person struggle getting it upstairs.
Teenagers
Small Single and Small Double sizes sit alongside the standard options, so it can fit the smaller frames often found in a teenager's bedroom.
If you want detailed reassurance about materials, firmness or support before spending, this model may frustrate you, as full specifications aren't confirmed in our data. Larger sizes are also limited: there's no Super King option, so couples wanting maximum space will need to look elsewhere.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Komfi Unity Comfort Mattress in a Box
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FAQ's
How much does the Komfi Unity Comfort mattress cost?
It depends on the size you choose, and the price table on this page shows the current price for each size. It sits firmly at the budget end of the mattress market.
What sizes does the Komfi Unity Comfort come in?
It's available in five UK sizes: Small Single, Single, Small Double, Double and King. There's no Super King option, which is a slight limitation for couples who want extra width.
Is the Komfi Unity Comfort a bed in a box mattress?
Yes. It arrives rolled and vacuum-packed in a box, which makes it easier to get through doorways and up narrow staircases than a traditional flat-delivered mattress.
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