Sealy Posturepedic Elevate Ultra Performance Gel Mattress
Mattress
Sealy Posturepedic Elevate Ultra Performance Gel Mattress
Size
Firmness
Medium Soft
Depth (cm)
33
Layers
6
Layer Details
- Quilted cover with ProShield® and SmarTex® treatment. A quilted cover treated with ProShield to repel allergens, which is helpful if dust mites or allergies disturb your sleep. The SmarTex treatment wicks away moisture and helps regulate temperature through the night.
- MemorySense® ComfortCore™. A memory foam layer that cradles to your unique shape, which means the mattress moulds around your body contours rather than pushing back against them. The result is a cushioned, calming feel as you settle in.
- Geltex. A supremely breathable foam with an open-cell structure, which means heat can escape rather than building up around you. It also provides a soft bounce back, so you won't feel stuck in the mattress.
- Cooling mesh. A mesh layer that reduces irritation from moisture build up. It works alongside the breathable foam above to keep the sleep surface fresher.
- Interior base plank. A plank within the base that provides additional support while still allowing air to flow through the mattress. This gives the softer comfort layers a stable foundation.
- AlignSupport® Coil Springs. Sealy's Posturepedic coil spring system senses and responds to your body weight, which means your spine is kept aligned whatever position you sleep in. The springs are twice tempered, so they hold their responsive nature over time.
Layer details from mattressonline.co.uk product page, September 2026.
- Fits compact rooms: At 90cm wide it slots into small bedrooms and loft conversions, and we suggest allowing at least 2.1m x 2.8m of floor space around it.
- A gentle feel for lighter sleepers: The medium soft comfort layers cushion lighter bodies, which means children and teens sink into the surface rather than perching on top of it.
- Cooling in a small footprint: Geltex's open-cell structure lets heat escape, useful in box rooms and lofts where warm air tends to collect around the bed.
- Allergy-conscious for a child's room: The ProShield cover repels allergens, endorsed by Allergy UK, which matters in kids' rooms where dust gathers around toy storage and shelving.
- Easy bedding to buy: Standard single sheets and a single duvet fit, although the 33cm depth means you'll need deep fitted sheets specifically.
This size suits you if...
You're buying for one sleeper who likes a soft, cradling feel: a teenager moving up from a starter bed, a solo adult in a first flat where the frame came with the room, or a spare bedroom that doubles as an office and needs one good bed against the wall rather than a double swallowing the floor.
Consider another size if...
You share the bed, or you simply want space to sprawl. The UK double is 45cm wider than the UK single at the same length, and we'd recommend it instead; allow at least 2.6m x 2.8m of room.
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How big is the Sealy Elevate Ultra Performance Gel in a UK single?
It measures 90 x 190cm, which is 3ft x 6ft 3in, the standard UK one-person size. The mattress itself is 33cm deep, noticeably taller than many singles, so check the height against your headboard and how high the sleeping surface will sit on your frame.
Will the UK single Sealy Elevate fit a bunk bed or mid sleeper?
The width matches, but the 33cm depth is the problem. Most bunk and mid sleeper frames specify a much shallower mattress so the safety rail still sits above the sleeper. Check your frame's maximum mattress depth before ordering; for most raised children's beds, this mattress will be too tall.
Is this mattress a good choice for a child's bedroom?
The feel suits children well: medium soft comfort layers cushion lighter bodies, and the Allergy UK endorsed ProShield cover helps in rooms where dust builds up. The single footprint leaves space for a desk and wardrobe. It is a premium spend for a child's bed, though, so weigh how long they'll use it.
What room size do I need for a UK single mattress?
We suggest allowing at least 2.1m x 2.8m of floor space, which is our own guidance rather than Sealy's. That leaves room to walk alongside the bed and open a wardrobe. In a loft conversion, position the 90cm width along the lower slope and the numbers still work in most rooms.
Should I get the UK single or size up to the UK double?
For a child, teen or a compact spare room, the UK single makes sense and keeps floor space free. If an adult will sleep here every night and the room allows it, the UK double is 45cm wider at the same length; we suggest at least 2.6m x 2.8m of floor space for it.