Sealy PostureLux Forbes Single Mattress
The Sealy PostureLux Forbes Mattress combines a latex comfort layer with PostureTech pocket springs and UniKey edge support, which means a buoyant, medium-feel surface with a stable edge to sit or sleep on.
- Buoyant latex pressure relief
- Springs adapt to your body shape
- Stable UniKey edge support
£1,399
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Sealy PostureLux Forbes Mattress
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Mattress details
Mattress
Sealy PostureLux Forbes Mattress
Size
Firmness
Medium
Construction
Foam
Latex
Pocket Spring
Depth (cm)
32
Layers
3
Layer Details
Latex comfort layer
A latex layer that delivers pressure relief and a naturally buoyant feel. You sit on the surface rather than sinking deep into it.
Sealy medium premium foam
A double layer of Sealy's medium premium foam, creating a complete comfort stack. It adds cushioning beneath the latex to keep the medium feel consistent.
PostureTech Core Support Plus springs
Springs with six turns each, twice tempered, with UniKey edge support. They adapt to your body shape and keep the edges steadier when you sit or sleep near them.
Layer details from crushedvelvetbedstore.co.uk product page, November 2026.
Key benefits
- Leaves the room usable: At 90 x 190cm (3ft x 6ft 3in), it fits rooms from 2.1m x 2.8m, which leaves a child space for a desk and a wardrobe alongside the bed.
- A balanced medium feel: The latex comfort layer gives a buoyant surface you lie on rather than sink into, which suits most solo sleepers who want neither very soft nor very firm.
- Steadier edges for sitting: UniKey edge support keeps the sides firmer underneath you, useful in a teenager's room or a study where the bed also serves as a seat.
- Two fit a guest room: A pair of UK singles lets a spare room sleep two friends or siblings separately, and each sleeper gets the full 90cm width to themselves.
- Deep, so check raised frames: Yes, 32cm is deep for a single and will rule out some bunk and cabin beds, but on a standard divan or bedstead it feels properly substantial.
This size suits you if...
You sleep alone, or you're buying for a child or teenager whose room has to hold a desk and storage as well as a bed. It also fits if you're kitting out a spare room or study where floor space matters more than bed width.
Consider another size if...
You share a bed with a partner every night, or you like room to sprawl. We'd recommend the UK double instead: it gives 67.5cm each for two sharing, and we suggest at least 2.6m x 2.8m.
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FAQ's
Will the Sealy PostureLux Forbes UK single fit a bunk bed or mid sleeper?
Possibly not. The mattress is 32cm deep, and raised frames usually set a maximum mattress depth so the guard rail stays high enough above the sleeping surface. Check the frame maker's stated limit against 32cm before ordering. On a standard single divan or bedstead, depth isn't a concern.
What size room do I need for a Sealy PostureLux Forbes single?
We suggest at least 2.1m x 2.8m for a UK single. The mattress itself measures 90 x 190cm, so in a small child's bedroom you can usually fit a desk or wardrobe along another wall. If the room is a loft conversion, check head clearance where the bed sits under the slope.
Is a UK single long enough for a tall teenager?
The UK single is 190cm long, the same length as the UK double. If your teenager is already close to that height, only the UK king and UK super king add length, each 10cm longer, though both need a far bigger room than a single.
Do standard single sheets fit the Sealy PostureLux Forbes UK single?
Standard single sheets and a single duvet (135 x 200cm) suit the 90 x 190cm footprint. The catch is depth: at 32cm, this mattress needs a fitted sheet with deep pockets, so check the pocket depth on the packaging before buying new bedding.
Is the Sealy PostureLux Forbes single a good choice for a guest room?
Yes, especially as a pair. Two UK singles let guests who aren't couples sleep separately, and the UniKey edge support helps when visitors sit on the side to dress. The medium rating suits most guests, although anyone who prefers a very firm mattress may find it a little soft.