Firmness
Type
Hybrid
Depth (cm)
25
Number of Layers
2
Trial Period (nights)
Warranty (years)
Price Range
£453 to £684
Best Sleeping Position(s)
Certifications
Assessed from Rem-Fit's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
The open-cell memory foam is designed to be breathable, which means you should get the contouring, cradled feel of memory foam with less of the heat build-up it's known for. If you're a hot sleeper who has ruled out foam before, that's worth a second look. Underneath, 4000 pocket springs across a dual-layer system respond to your body individually, so a heavier hip or shoulder gets support without dragging the rest of the surface down with it. It also helps limit motion transfer, useful if you share a bed with a restless partner. The 7.5/10 med-firm tension suits back and front sleepers well, and the £453 to £684 price range is fair for a hybrid of this depth.
Key Features & what's inside
- Memory foam. A cool, breathable open-cell memory foam sits at the top of the mattress. The open-cell structure lets air move through more freely, which means the contouring comfort of memory foam with less trapped heat.
- Spring system. Beneath the foam is an advanced dual-layer spring system with 4000 contouring pocket springs. Each spring moves independently, so support adapts to your shape and movement transfers less across the bed.
Layer details from rem-fit.co.uk product page, September 2026.
Who's it NOT for?
At a 7.5/10 med-firm tension, this is firmer than a true medium, so lightweight side sleepers may find it a little too unyielding at the shoulder and hip. And if you dislike the slow, hugging feel of memory foam altogether, even a breathable open-cell version, a latex or all-spring design may suit you better.
Rem-Fit 600 Lux Black Edition Mattress
How firm is the Rem-Fit 600 Lux Black Edition mattress?
Rem-Fit describes it as a med-firm tension, rated 7.5/10. That places it on the firmer side of medium, which suits most back and front sleepers, although lightweight side sleepers may find it slightly too firm.
Is the Rem-Fit 600 Lux Black Edition good for hot sleepers?
It should cope better than traditional memory foam. The top layer uses open-cell memory foam, a structure that lets air move through the foam, and the pocket spring layers beneath allow further airflow. That said, memory foam still sleeps warmer than some alternatives.
How many springs does the Rem-Fit 600 Lux Black Edition have?
It has 4000 contouring pocket springs arranged in a dual-layer spring system. Pocket springs move independently of one another, which means more tailored support and less disturbance when a partner moves.
What sizes does the Rem-Fit 600 Lux Black Edition come in?
Five UK sizes: Single, Small Double, Double, King and Super King. Prices range from £453 to £684 depending on the size you choose.
How long does Rem-Fit 600 Lux Black Edition delivery take?
Rem-Fit quotes delivery within 5-10 working days on its own site. If you buy through a retailer instead, check their delivery terms, as timings can differ.
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