Sealy Posturepedic Elevate Premier Gel Mattress
Mattress
Sealy Posturepedic Elevate Premier Gel Mattress
Size
Firmness
Firm
Construction
Depth (cm)
27
Layers
6
Layer Details
- Quilted cover. A traditional quilted cover treated with SmarTex and ProShield, which means it helps manage moisture and temperature while offering allergen relief. A sensible top layer if you're prone to sniffles.
- Geltex. A supremely breathable foam with an open-cell structure that reduces overheating. It also has excellent bounce back, so you won't feel stuck in one position.
- MemorySense ComfortCore. A core layer similar to memory foam that moulds around your body. This keeps joints, bones and muscles protected while you sleep.
- Dual firm foam layer. An additional stability layer. It adds to the firm, planted feel of the mattress as a whole.
- AlignSupport Coil Springs. Sealy's Posturepedic spring system, designed to align the spine by sensing and responding to your body weight. The springs are twice tempered, which means they hold their shape and resilience for longer.
- Base plank. A sturdy platform that supplies stable support for all the layers above. It helps avoid the mattress dipping in the middle over time.
Layer details from mattressonline.co.uk product page, September 2026.
- Firm support that suits two different sleepers: The AlignSupport springs respond to each person's body weight separately, which means a lighter and heavier partner each get spine alignment rather than a compromise.
- Edge support matters more at 67.5cm each: Two people sharing a UK double get 67.5cm each, so the UniCased XT edge reinforcement means the outer inches stay usable rather than feeling like a slope.
- Geltex keeps a shared bed cooler: Two bodies raise the temperature under one duvet, and the open-cell Geltex layer helps that heat escape instead of building up between you.
- A firm surface transfers less movement: The dual firm foam layer and planted feel mean a partner turning over is less likely to wake you, useful when you're sharing every night.
- Fits where a UK king would dominate: The UK double is 15cm narrower and 10cm shorter than the UK king, which often makes the difference between fitting bedside tables on both sides or losing one.
This size suits you if...
You share the bed every night and your room sits around the typical UK size, where a bigger bed would crowd out the wardrobe and drawers. It also suits a solo sleeper who likes space to sprawl, or shares with a dog or cat that claims its own corner, and anyone furnishing a guest room that needs to take visiting couples without swallowing the whole floor.
Consider another size if...
Your room comfortably exceeds 3m x 3m and you both want more space, since 67.5cm each is workable rather than generous. We'd recommend the UK king instead: 15cm wider, 10cm longer, and we suggest at least 2.7m x 2.9m for it.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
Is a UK double big enough for two people on a firm mattress?
Yes, with a caveat. Two people sharing get 67.5cm each, and because this is a firm mattress you sleep on it rather than sinking in, so you tend to use your full share of the width. The reinforced edges help here, letting you sleep close to the sides without feeling like you'll roll off.
Will the Sealy Elevate Premier Gel double fit in a typical UK bedroom?
In most cases, yes. The mattress measures 135 x 190cm, or 4ft 6in x 6ft 3in, and we suggest a room of at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That usually leaves space for a wardrobe and drawers, which is exactly why the UK double remains the standard couples' size.
Can you keep bedside tables on both sides with a double?
Usually, and it's one of the main reasons to choose a UK double over a UK king. In a room around the 3m x 3m mark, the 135cm width typically leaves enough clearance either side for a table and a walkway. Measure your wall, add the tables, and check you still have room to open drawers.
Should a couple pick this in a double or size up to the king?
If your room allows at least 2.7m x 2.9m and you both move around at night, the UK king gives you 15cm more width and 10cm more length. If space is tighter, the UK double is the sensible call, and the firm, stable feel of this mattress means less disturbance from a partner turning over than a softer bed would give.
Is the double easy to get upstairs in an older house?
It's a pocket sprung hybrid rather than a rolled foam mattress, so it arrives at full size and doesn't bend easily. At 135cm wide it's manageable on most staircases, but if you live in an older terrace with a turning stair or a new build with a tight landing, measure the awkward point first. The turning handles help with manoeuvring.