Firmness
Type
Foam
Depth (cm)
14
Number of Layers
2
Trial Period (nights)
100
Warranty (years)
10
Price Range
£119 to £165
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 a low-cost, low-fuss foam mattress that doesn't feel like a false economy. The Ecofoam core is made from fully recycled materials, which means it's a slightly kinder choice for the environment without a price penalty. The soft-touch polyester cover and Reflex foam layer give a comfortable medium feel, and it conforms to BS7177:2008 fire resistance standards for home use. Buying through Mattress Online, you get a 100-night trial and free delivery to most UK locations, which takes some risk out of a budget purchase. The 10-year guarantee is reassuring at this price, with the cover covered for a shorter period than the core.
Key Features & what's inside
- Comfort Layer. A high-density Reflex foam comfort layer, which means the surface responds to your shape while keeping a medium level of support. It's the part you'll feel first when you lie down.
- Support System. A sturdy core of Ecofoam, made from fully recycled materials, moulds to your body to encourage healthy posture. That contouring helps reduce tossing and turning through the night.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
At 14cm deep, it's a slim mattress, so heavier adults or anyone used to a deep, plush feel may find it lacking. Some owners report it sleeps firmer than the stated medium, which makes it a risky pick for lightweight side sleepers who need pressure relief at the shoulder and hip.
Komfi Unity Comfort Eco Foam Mattress
How firm is the Komfi Unity Comfort Eco Foam mattress?
It's listed as medium. That said, some owner reviews describe it as quite firm or harder than expected, so if you're a lightweight side sleeper or prefer a soft, sinking feel, treat it as sitting toward the firmer end of medium.
Does the Komfi Unity mattress come with a trial period?
Mattress Online lists a 100-night trial with this mattress. That trial is the retailer's own offer rather than a Komfi guarantee, so check the terms wherever you buy.
What is the Komfi Unity mattress made of?
It's an all-foam mattress: a high-density Reflex foam comfort layer over an Ecofoam support core made from fully recycled materials, wrapped in a soft-touch polyester cover. It's handcrafted in the UK and conforms to BS7177:2008 fire resistance standards for home use.
Is the Komfi Unity mattress good for a guest room or bunk bed?
Yes, arguably its best use. At 14cm deep it's slim enough for bunk beds, and owner reviews frequently recommend it for guest rooms. Sizes run from UK Single up to UK Double, priced from £119 to £165.
How long is the guarantee on the Komfi Unity mattress?
The retailer listing states a 10-year guarantee, which applies to the mattress core; the cover is guaranteed for 1 year. A decade of cover on the core is generous at this price point.
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