Sealy PostureLux Forbes 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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The Sealy PostureLux Forbes Mattress is a handmade-in-the-UK pocket spring mattress, 32cm deep, with a latex comfort layer and two layers of Sealy medium premium foam on top. It's rated medium, so it suits people who want a balanced feel rather than something very soft or very firm. It comes in a UK single, UK double, UK king and UK super king, with a 100-night comfort guarantee and a 5-year term.
Mattress specifications
Firmness
Medium
Type
Pocket Spring
Depth (cm)
32
Number of Layers
3
Trial Period (nights)
Warranty (years)
Price Range
£1,399 to £2,199
Best Sleeping Position(s)
Back Sleeping
Combination Sleeping
Side Sleeping
Certifications
Allergy UK
Assessed from the specification published by crushedvelvetbedstore.co.uk, captured November 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The latex comfort layer is described as giving a naturally buoyant feel and strong pressure relief, so you sit on top of the surface rather than sinking into it. Below that, two layers of Sealy medium premium foam add cushioning, and the PostureTech springs, each twice tempered, adapt to your body shape. UniKey edge support helps the sides hold up when you sit or sleep near them. The SilverFresh antibacterial cover and Allergy UK endorsement of ProShield technology are useful if allergens concern you. It suits most sleepers who want a medium feel, although it's a premium purchase.
Key features & 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.
Best suited for?
Allergy sufferers
The SilverFresh antibacterial cover and Allergy UK endorsed ProShield technology make this a sensible pick if allergens are a concern in your bedroom.
Combination sleepers
A buoyant latex layer means you sit on top of the surface rather than sinking in, so changing position during the night feels easier.
Couples
UniKey edge support keeps the sides steadier when you sit or sleep near them, which helps when two people share the bed and use the full width.
Side sleepers
Latex pressure relief over two layers of medium foam cushions the body, while the springs adapt to your shape for a balanced medium feel.
If you prefer sleeping on a firm mattress, this might not be the best choice, as it's rated medium. If you want a very soft, sink-in feel, the buoyant latex may not give it to you. It's single-sided and can't be flipped, so you're limited to rotating it. Sealy also doesn't publish a spring count.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Sealy PostureLux Forbes Mattress
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FAQ's
How firm is the Sealy PostureLux Forbes?
It's rated medium. The latex comfort layer gives it a buoyant feel, so it suits sleepers who want a balanced surface, but anyone who wants a firm or very soft mattress may prefer a different grade.
What sizes does the Sealy PostureLux Forbes come in?
It comes in a UK single, UK double, UK king and UK super king. Sealy doesn't list a UK small single or UK small double for this mattress, so check your frame size before ordering.
How deep is the Sealy PostureLux Forbes?
It's 32cm deep. That's a fairly substantial mattress, so check your bed frame and any fitted sheets suit that depth before you buy.
Can you flip the Sealy PostureLux Forbes?
No. It's single-sided and not flippable, so you can't turn it over to even out wear. Rotating it is the option you have.
Is the Sealy PostureLux Forbes good for allergy sufferers?
It has a SilverFresh antibacterial cover and ProShield technology, which carries an Allergy UK endorsement. That's a sensible fit if allergens are a concern, though it isn't a medical treatment.
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