Sealy Webber Elevate Ultra Posturepedic Single Mattress
The Sealy Webber Elevate Ultra Posturepedic is one of Sealy's Posturepedic range, available in UK Single, Double, King and Super King.
- Medium-firm feel for most sleepers
- Lumbar support in the centre third
- Handcrafted in the UK
£1,029
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Sealy Webber Elevate Ultra Posturepedic Mattress
More available sizes
Mattress details
Mattress
Sealy Webber Elevate Ultra Posturepedic Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
Layers
7
Layer Details
Damask cover
A soft, durable damask knitted cover with ProShield and SmarTex treatments. SmarTex is described as a cooling cover and ProShield as hypoallergenic, so it suits anyone who sleeps warm or is sensitive to allergens.
InfiniLux comfort layer
An InfiniLux foam layer that gives the top of the mattress a luxury feel. It forms the cushioning you lie on first, softening the medium-firm feel a little.
MemorySense ComfortCore
A memory foam layer set in the centre third of the mattress as specialist lumbar support. It adds support under your lower back, where your weight sits most.
Firm and Extra Firm foam
Firm and Extra Firm foam layers sit beneath the comfort layers. They give a durable, supportive base for the softer layers above, so the top doesn't sink too far.
AlignSupport coil springs
Sealy's Posturepedic open coil spring system, which senses and responds to body weight. It supports each part of your body according to how much weight it carries.
UniCased XT surround
A full wall around the perimeter of the mattress. It gives edge-to-edge support, so you can use more of the surface and sit on the edge more comfortably.
BasePlank
The foundation layer of the Webber, which the rest of the mattress is built on. You won't feel it, but it holds everything above it in place.
Layer details from mattressonline.co.uk and mynextmattress.co.uk product pages, October 2026.
Key benefits
- Fits compact rooms: At 90cm wide it needs only 2.4m x 2.8m of floor space by our guidance, which leaves room for a wardrobe and desk in most children's bedrooms.
- Full adult length: The 190cm length is the same as the UK small double and UK double, so a solo adult loses nothing on legroom by choosing this width.
- Works where two beds are needed: Two UK singles with a walkway between suit siblings sharing or a guest room set up for visitors who don't share a bed.
- A step up for a child's bed: Posturepedic is Sealy's support-focused range, a more substantial choice for a growing teenager than the budget mattresses often bought for this size.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm single duvet fit, the most widely stocked and lowest-cost bedding of any UK size.
This size suits you if...
You're buying for a child's or teenager's room where the bed shares space with storage and a desk, you're furnishing a spare room or student flat for one sleeper, or you're an adult who sleeps alone in a smaller bedroom and wants Sealy's support-led build without giving the mattress the whole floor.
Consider another size if...
You share the bed, or you sleep alone but spread out and your room can take more width. We'd recommend the UK double instead, which is 45cm wider at the same length; allow at least 2.6m x 2.8m for it.
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FAQ's
What room size do I need for a UK single mattress?
We suggest allowing at least 2.4m x 2.8m of floor space for a UK single, which is our own guidance rather than Sealy's. The mattress itself is 90 x 190cm, so in most box rooms and loft conversions you'll still have space for a wardrobe or desk alongside it.
Will the Sealy Webber Elevate Ultra single fit a bunk or mid-sleeper frame?
The 90 x 190cm footprint matches standard UK bunk and mid-sleeper frames. Depth is the deciding factor on raised frames, and Sealy doesn't publish one for this mattress, so check the measurement with the retailer and against your frame's maximum before buying. Guard rails need to sit well above the mattress surface.
Is a UK single big enough for an adult?
For sleeping alone, yes. The 190cm length matches the UK double, so height isn't the issue; width is. At 3ft across you have room to sleep comfortably but little to sprawl. Adults who move around a lot at night, or who simply have the room space, tend to prefer the UK double, 45cm wider.
How much smaller is this single than the UK king version?
The UK single is 60cm narrower and 10cm shorter than the UK king, a substantial difference in both directions. If you're weighing the two for a master bedroom, we suggest at least 2.7m x 2.9m of floor space for the UK king, against 2.4m x 2.8m for the UK single.
Where can I compare prices on the Sealy Webber Elevate Ultra in a single?
Use the retailer table on this page, which is updated as retailers change their prices. Availability for this size can differ from the other sizes in the range, so a listing you saw for the UK double won't necessarily match what's offered on the UK single.