Silentnight SleepResponse Support 3600 Combination Double Mattress
The Silentnight SleepResponse Support 3600 Combination Mattress pairs Mirapocket zoned springs with graphite-infused cooling memory foam, which means you get targeted support underneath and a cooler, cushioned feel on top.
- Cooling foam for warm sleepers
- Memory foam cushions your body
- Zoned support across your body
£1,899
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Silentnight SleepResponse Support 3600 Combination Mattress
More available sizes
Mattress details
Mattress
Silentnight SleepResponse Support 3600 Combination Mattress
Size
Firmness
Construction
Memory Foam
Pocket Spring
Depth (cm)
Layers
3
Layer Details
Box top with CoolEase cover
An advanced box top design wrapped in a CoolEase cover that draws heat from your body. That helps you settle faster and stay comfortable if you sleep warm.
Support Memory Cool memory foam
Graphite-infused memory foam that Silentnight says is 15% cooler than standard memory foam. It cushions your body and eases pressure without trapping as much heat.
Mirapocket zoned support system
Pocket springs arranged in zones to support different parts of your body. Silentnight says the system improves posture for more restful sleep.
Layer details from dreams.co.uk product page, November 2026.
Key benefits
- Leaves space for furniture: At 135 x 190cm, a UK double leaves room for a wardrobe and drawers in bedrooms where a UK king would have you edging sideways round the foot of the bed.
- Cooler when you're sharing: Two sleepers at 67.5cm each trap more body heat, so the CoolEase cover and graphite foam, which Silentnight says is 15% cooler than standard memory foam, matter more here.
- Zoned support on each side: The Mirapocket zoned springs give different parts of the body different support, which means each of you is supported along your own frame on a shared surface.
- Easy bedding to find: Double sheets and a 200 x 200cm double duvet are on every high street, which helps if you're furnishing a whole home and the budget is already stretched.
- Bedside tables both sides: In a room of around 3m x 3m, a UK double usually leaves space for bedside tables on both sides, so neither of you has to climb over the other at night.
This size suits you if...
You share the bed with a partner in a standard UK bedroom and want bedside tables either side without the bed swallowing the floor, or you're kitting out a guest room for visiting couples and want foam comfort that stays a little cooler.
Consider another size if...
You or your partner regularly feel crowded at 67.5cm each. We'd recommend the UK king instead, which gives 75cm each; allow at least 2.7m x 2.9m for it.
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FAQ's
Is the UK double SleepResponse Support 3600 big enough for two people?
For most couples, yes, although it is snug. You each get 67.5cm of width, which suits partners who sleep close or are of average build. If either of you sprawls, the UK king adds 7.5cm each. On a bed this shared, the cooling cover and graphite foam help keep the heat down.
What size room do I need for a UK double Silentnight SleepResponse Support 3600?
We suggest at least 2.6m x 2.8m. Around 3m x 3m is the more comfortable space if you want a wardrobe, drawers and bedside tables alongside it. At the smaller end, check where the door and wardrobe doors swing before you commit.
Should I get the UK double or UK king SleepResponse Support 3600?
Choose the UK double if your room is under our suggested 2.7m x 2.9m for a UK king, or you need the floor space. The UK king is 15cm wider and 10cm longer, giving 75cm each. Taller sleepers often notice that extra length more than the width.
How big is a Silentnight SleepResponse double mattress in feet?
The UK double measures 4ft 6in x 6ft 3in, or 135 x 190cm, so it fits any frame sold as a standard British double. Silentnight doesn't publish a depth for this mattress, so check your frame's side rails and headboard height before buying.
Will a double mattress fit up narrow stairs in a terraced house?
A 135cm-wide pocket spring mattress can be awkward on turning stairs in older terraces and on tight new build landings. Measure the narrowest turn, the landing and the bedroom doorway before ordering, then compare the retailers listed on this page.