Firmness
Medium Firm
Type
Pocket Spring
Depth (cm)
25
Number of Layers
5
Trial Period (nights)
100
Warranty (years)
10
Price Range
£578 to £914
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.
Temperature regulation is the main draw here. The TrueGel layer sits above the springs, which means heat has a route away from your body rather than building up in the foam. Below it, 1000 pocket springs move independently to follow your shape, and a castellated foam layer, foam cut into grid-like sections, adds zones that flex on their own. There are some reassuring credentials too: National Bed Federation approval, BS7177: 2008 fire resistance, and a carbon neutral accredited business behind it. At £578 for a single, it isn't a budget buy, but the gel technology and UK handcrafting go some way to justifying that. Four sizes are available, from single up to super king.
Key Features & what's inside
- Microquilted cover. A micro-quilted cover gives the sleep surface a smooth, soft finish. It's the first thing you'll feel when you lie down.
- Castellated foam. This foam is cut into grid-like sections, which means each zone can move independently. In practice, that helps the mattress adapt to different parts of your body.
- TrueGel Technology. Komfi's specialised gel layer is designed for temperature regulation. If you're a hot sleeper, this is the layer doing the heavy lifting for you.
- Pocket springs. A layer of 1000 adaptive pocket springs conforms to your body's contours. Each spring works on its own, which means support where you need it rather than a uniform push-back.
- Ecofoam base. The base is made from recycled, re-engineered Ecofoam. It's a durable foundation with a lighter environmental footprint than virgin foam.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
If you prefer a properly firm mattress, Komfi's own medium rating suggests this may feel a little softer than you'd like. Equally, anyone set on a traditional deep pocket-sprung feel with a high spring count may find 1000 springs on the modest side. Heavier sleepers wanting extra-firm support should look elsewhere.
Komfi GelMed Comfort Mattress
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Is the Komfi GelMed Comfort mattress firm or medium?
Komfi describes it as medium, although you may see it listed elsewhere as medium firm. Going by the brand's own wording, expect a middle-of-the-road feel: enough give for side sleepers, with the pocket springs providing underlying support.
Does the Komfi GelMed Comfort come with a trial period?
Mattress Online lists a 100-night trial with this mattress. That's the retailer's own offer rather than a Komfi guarantee, so check the terms wherever you buy.
How long is the guarantee on the Komfi GelMed Comfort?
The Mattress Online listing states a 10 year guarantee. As this appears on a retailer page rather than Komfi's own site, it's sensible to confirm the guarantee terms at the point of purchase.
Is the Komfi GelMed Comfort good for hot sleepers?
It's designed with them in mind. The TrueGel layer is included specifically for temperature regulation, and the pocket spring core allows more airflow than an all-foam construction. No mattress can promise a cool night, but cooling is clearly a design priority here.
What sizes does the Komfi GelMed Comfort come in?
Four UK sizes: single, double, king and super king. Prices range from £578 to £914 depending on the size you choose, and the mattress is 25cm deep across the range.
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