Silentnight SleepResponse Support 3600 Combination Super King 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
£2,599
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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
- 90cm each for two: Two people sharing get 90cm each, which is the full width of a UK single, so you rarely end up clinging to the edge.
- Room for a restless partner: Distance does more than any comfort layer to stop you feeling a partner shift, and the UK super king gives you 15cm more each than the UK king.
- Space when the family piles in: If small children or a large dog join you most nights, the extra width means everyone still gets a fair share of the mattress rather than a sliver.
- Cooling where bodies crowd together: More people in one bed means more heat, so the CoolEase cover and graphite-infused foam, which Silentnight says is 15% cooler than standard memory foam, suit a crowded bed.
- Zoned support with room to spread out: The Mirapocket springs are arranged in zones to support different parts of your body, and with 90cm each you can lie in your own space without drifting towards your partner.
- Fills a large master bedroom: In a period property or a generous new build master, a UK super king sits in proportion with the room where a smaller bed can look a little lost.
This size suits you if...
You share the bed with a partner whose tossing and turning wakes you, or children and a dog regularly end up in the middle by morning, and your bedroom comfortably clears our suggested minimum of 3m x 2.9m.
Consider another size if...
Your bedroom is under 3m x 2.9m, or a narrow landing turn makes a 180cm-wide mattress a risk. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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FAQ's
Is a super king Silentnight SleepResponse Support 3600 big enough for two adults and a child?
For a child who arrives during the night, usually yes. Two adults get 90cm each on the UK super king, so a small child can settle between you without anyone losing much space. If two children and a dog are a regular arrangement, it will feel snug, but no standard UK size is wider.
How much bigger is the UK super king than the UK king?
The UK super king is 30cm wider than the UK king and exactly the same length, 200cm. Shared between two people, that works out at 15cm more each: the UK king gives 75cm per person, the UK super king gives 90cm. If length is your concern, sizing up changes nothing.
What size bedroom do I need for a UK super king mattress?
We suggest at least 3m x 2.9m for a UK super king, and more if you want bedside tables on both sides with easy access. In a loft conversion, measure where the ceiling slopes too, because the low side often decides which wall the bed can go against.
Will a UK super king Silentnight SleepResponse Support 3600 fit up my stairs?
At 180cm wide, the UK super king is the size most likely to snag on a tight landing turn or a bedroom door that swings inward. Silentnight doesn't publish a depth for this mattress, so measure your stairs, landing and doorways first, then compare the retailers listed on this page.
What duvet fits a super king mattress?
Choose a super king duvet, which measures 260 x 220cm, with fitted sheets made for a 180 x 200cm mattress. Bedding from a UK king or UK double won't fit, so budget for new sheets and covers if you are sizing up at the same time as replacing the mattress.