Sealy Posturepedic Elevate Ultra Prestige Gel Mattress
Mattress
Sealy Posturepedic Elevate Ultra Prestige Gel Mattress
Size
Firmness
Medium Firm
Depth (cm)
30
Layers
4
Layer Details
- Quilted Cover. A soft quilted cover blended with SmarTex fibres, which wick away moisture and draw off heat to help regulate your temperature through the night. It's also treated with ProShield to help protect against allergens.
- Geltex. A highly breathable foam with an open-cell structure, which means heat escapes rather than building up beneath you. It offers pressure relief with a quicker bounce-back than traditional foams, so you shouldn't feel stuck when you change position.
- MemorySense® Comfort Core™. A memory foam layer that gently moulds around your shape, easing pressure on hips and shoulders. It adds targeted support where your body pushes hardest into the mattress.
- AlignSupport Coil Springs. Sealy's Posturepedic coil spring system senses and responds to your body weight to keep your spine aligned. The springs are twice tempered, which means they're treated to hold their responsiveness over time.
Layer details from mattressonline.co.uk product page, September 2026.
- 90cm each for two sharing: Two people sharing get 90cm each, which means a partner who turns over a lot becomes far easier to sleep through.
- Room for night-time visitors: If children pad through at 3am, or a large dog treats the bed as home, the extra width means nobody ends up clinging to the edge.
- Cooling that suits close quarters: Two bodies in one bed generate real heat, and the Geltex layer's open-cell structure lets air move through rather than trapping warmth between you.
- Springs that support two different builds: The Posturepedic coil springs respond to each sleeper's body weight individually, useful when you and your partner are quite different sizes.
- Fills a larger master properly: In a period property or a generous new build master bedroom, a UK king can look lost; this size sits in proportion with the room.
This size suits you if...
You share the bed every night and want the most sleeping space a standard UK size offers, your partner is genuinely restless and distance matters more to you than any comfort layer, or your mornings regularly include a child or a dog and you'd rather plan for that than fight it. Your bedroom should measure at least 3m x 2.9m, and larger will feel more comfortable.
Consider another size if...
Your room is under our suggested 3m x 2.9m minimum, or you sleep alone and the width would go unused. Sealy sells this mattress in UK super king only, so a smaller room means choosing a different mattress rather than a smaller size of this one.
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How much space does each person get on a UK super king?
Two people sharing a UK super king get 90cm of width each, the same as a UK single apiece. On this mattress that space works with the spring system: the Posturepedic coils respond to each sleeper's weight separately, so a heavier partner turning over is felt less on your side of the bed.
Is the Sealy Elevate Ultra Prestige Gel only available in super king?
Yes. This model is sold in UK super king only, at 180 x 200cm. If you need a UK king or UK double, you'll need a different mattress rather than a different size of this one, which makes it a purchase for people already committed to a super king bed frame.
What room size do you recommend for a super king mattress?
We suggest at least 3m x 2.9m, and around 3.5m x 3.2m before the room feels genuinely comfortable, with space to walk around both sides and open wardrobe doors. That's our guidance rather than Sealy's. Measure with door swing in mind too, as a 180cm wide bed changes how a room is used.
Is a UK super king longer than a UK king?
No, they're the same length at 200cm. The difference is width: the UK super king is 30cm wider than the UK king. That extra 30cm is where the value sits for couples, especially if children or pets join you at night, since it's roughly a third of a single mattress in added space.
Is a UK super king a good size for sharing with children or pets?
It's the most practical standard size for it. With 6ft of width, a child wandering in during the night can settle between you without pushing either adult to the edge, and a large dog at the foot of the bed leaves usable legroom. The mattress's breathable Geltex layer also helps when three bodies share the heat.