Sealy Imperial Contract Memory Super King Mattress
The Sealy Imperial Contract Memory Mattress pairs memory foam with a sprung core, which means you get that slow, cradling surface feel without the sunk-in softness an all-foam bed can have.
- Shallow hug, easy to change position
- Eases pressure at hips & shoulders
- Firmer support where you press hardest
£1,385
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Sealy Imperial Contract Memory Mattress
More available sizes
Mattress details
Mattress
Sealy Imperial Contract Memory Mattress
Size
Firmness
Medium Firm
Construction
Foam
Memory Foam
Depth (cm)
31
Layers
3
Layer Details
MemorySense foam
Sealy's MemorySense foam sits on top and contours to your shape, easing weight off pressure points like hips and shoulders. You feel it as a gentle, relieving cradle rather than a firm surface.
Reflex Foam
A firm Reflex foam layer follows, contouring to your body while stopping you sinking too deeply. In practice this keeps the memory foam feel shallow and supportive, which makes changing position easier.
PostureTech Core Support Springs
Sealy's PostureTech springs form the core and become firmer when met with pressure, so support increases exactly where your body pushes hardest. The tops of the springs are made to a softer tension, which means they follow your shape rather than feeling rigid.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- 90cm of width each: Two people sharing get 90cm each, which means a restless partner can turn all night without ever crossing into your half.
- Memory foam plus real distance: The MemorySense top layer absorbs movement where you lie, and the sheer width does the rest, so disturbance rarely travels across the bed.
- Room for the whole household: At 6ft x 6ft 6in there's genuine space when children climb in at 3am or a large dog treats the bed as routine.
- Springs that adjust across a wide surface: PostureTech springs firm up where pressure is highest, useful on a bed this wide where two sleepers of different weights sit far apart.
- A build to match a large master: The 31cm hotel-style depth suits a super king, which can look oddly flat in a big bedroom at shallower heights.
This size suits you if...
You share the bed every night and want maximum distance from a restless partner, your children or pets regularly join you and a UK king has started to feel crowded, or you have a large master bedroom where anything smaller would look undersized. It helps if you also like a medium firm feel, since this mattress leans supportive rather than plush.
Consider another size if...
Your bedroom is smaller than the 3m x 2.9m we suggest as a minimum, or you sleep alone. We'd recommend the UK king instead: it's 30cm narrower, the same length, and needs a room of at least 2.7m x 2.9m.
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FAQ's
How much space does each person get on a super king Sealy Imperial Contract?
90cm each for two people sharing. That's a full single bed's worth of width per person, which is why couples who find a UK king restrictive tend to settle on a super king. Combined with the MemorySense foam's ability to absorb movement locally, it means one sleeper shifting position rarely registers on the other side.
What size room do I need for the Sealy Imperial Contract in a UK super king?
We suggest at least 3m x 2.9m, with around 3.5m x 3.2m feeling comfortable rather than tight. That allows walking space on both sides and room for bedside tables. In a loft conversion, check the slope too: the 180 x 200cm footprint limits which wall the bed can sit against.
Is the super king worth it over the UK king for this mattress?
If you share with a genuinely restless partner, or children and pets join you often, yes. The UK super king is 30cm wider than the UK king and the same length, and that extra width buys distance no comfort layer can. If your room is under 3m wide, the UK king is the sensible call.
Is the Sealy Imperial Contract super king good for sharing with children?
It's one of the better setups for it. The width means a child wandering in at night doesn't leave anyone clinging to an edge, and the medium firm feel keeps the surface stable rather than tipping everyone towards the middle. The PostureTech springs firm up under whoever presses hardest, so support stays even across a mixed load.
Where can I compare prices for the super king Sealy Imperial Contract?
Use the price table on this page. The prices shown here are updated as retailers change them, so it's a more reliable guide than a figure quoted in an article. Super king is the largest and priciest size of this mattress, so it's worth a quick check before you commit to a retailer.