Firmness
Firm
Type
Hybrid
Depth (cm)
37
Number of Layers
5
Trial Period (nights)
60
Warranty (years)
5
Price Range
£684 to £1,790
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
If you sleep hot, this mattress makes a strong case. The cooling works in stages: a cool-to-touch surface for that first pleasant chill, a gel layer that responds as you move, then foam designed to let heat escape rather than build up. The 3000-spring support system, split between full-size Mirapocket springs and mini springs, gives targeted pressure relief and helps keep movement on one side from disturbing the other. Yes, £684 upwards is a real spend, but you get a 37cm deep hybrid with a pillowtop, a 60-night trial and a 5 year guarantee. It suits back and front sleepers who want a firm feel, although lightweight side sleepers may find it a little unforgiving.
Key Features & what's inside
- Cool-to-touch sleep surface. SensICE fabric gives an instant cooling effect against your skin, which means you feel a pleasant chill the moment you get in. It draws heat away from your body for a cooler night's sleep.
- Gel infused comfort layer. A responsive gel infused layer that reacts to your movements. As you shift position through the night, it adapts with you rather than leaving you to sink into one spot.
- Breathable foam. Silentnight describes this foam as 5X more breathable than memory foam, which means heat has somewhere to go instead of gathering beneath you. It works alongside the gel layer to keep the sleep surface feeling fresh.
- Plush pillowtop. A plush pillowtop adds a softer, cushioned feel at the surface for soothing relief. It takes a little of the edge off the firm support beneath.
- Pocket spring support system. 2000 Mirapocket springs combine with 1000 mini springs, giving pressure relief that adapts to your shape. Because each spring moves independently, a restless partner is less likely to disturb you.
Layer details from silentnight.co.uk product page, September 2026.
Who's it NOT for?
If you prefer a soft, sink-in feel, this firm hybrid is the wrong choice, even with its pillowtop. Lightweight side sleepers may find it presses a little too firmly at the shoulder and hip. And if cooling features are not a priority for you, you may be paying for technology you will never notice.
Silentnight UltraGel CoolTouch 3000 Firm Mattress
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How firm is the Silentnight UltraGel CoolTouch 3000?
Silentnight rates it as firm. The plush pillowtop softens the surface slightly, but the underlying support from the 3000-spring system is firm, so expect to sleep on the mattress rather than in it. It suits back and front sleepers best.
Does the Silentnight UltraGel CoolTouch 3000 keep you cool?
Cooling is its main selling point. The SensICE fabric surface feels cool to the touch straight away, a gel infused layer sits beneath it, and the foam layer is described by Silentnight as 5X more breathable than memory foam, so heat moves away from your body rather than building up.
Does the Silentnight UltraGel CoolTouch 3000 come with a trial and guarantee?
Yes. Silentnight offers a 60-night trial, so you can sleep on it at home before committing, plus a 5 year guarantee. Delivery is listed at 14 days.
How many springs does the Silentnight UltraGel CoolTouch 3000 have?
It has 3000 springs in total: 2000 full-size Mirapocket springs plus 1000 mini springs. Each moves independently, which means support adjusts to your shape and movement on one side is less likely to travel across the bed.
What sizes does the Silentnight UltraGel CoolTouch 3000 come in?
Five UK sizes: Single, Small Double, Double, King and Super King. Prices range from £684 to £1,790 depending on the size you choose.
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