Sealy PostureLux Wilton Double Mattress
The Sealy PostureLux Wilton Mattress combines a latex comfort layer with a firm pocket spring core, which means you get quick pressure relief on top of the firm, supportive feel you'd expect.
- Firm feel for back sleepers
- Latex layer eases pressure
- Larger usable sleep surface
£1,399
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Sealy PostureLux Wilton Mattress
More available sizes
Mattress details
Mattress
Sealy PostureLux Wilton Mattress
Size
Firmness
Firm
Construction
Foam
Latex
Pocket Spring
Depth (cm)
29
Layers
2
Layer Details
Latex comfort layer
A latex layer that moves with you, which means instant pressure relief while the firm feel stays underneath.
Sealy firm foam layer
A double layer of Sealy's firm premium foam that completes the comfort stack, which means a steady, supportive feel above the springs.
Layer details from crushedvelvetbedstore.co.uk product page, November 2026.
Key benefits
- Leaves room for the rest of the furniture: At 135 x 190cm, the UK double fits a typical second bedroom or first flat alongside a wardrobe and chest of drawers, where a UK king would eat into the floor.
- More of the surface is usable: Sealy's UniKey edge system gives a larger usable sleep surface, which means each of you can lie nearer the side without feeling squeezed towards the middle.
- Firm support under both of you: PostureTech Core Support Plus springs give the firm, flat support this mattress is rated for, which suits couples who both like a steady, supportive feel.
- A little give on top: The latex comfort layer moves with you, so the firm feel eases slightly at the shoulders and hips rather than feeling hard and unforgiving.
- Bedding is easy to find: Double sheets and a 200 x 200cm double duvet fit, and both are sold almost everywhere, which helps when you're furnishing a whole home at once.
- Easy to match an older frame: In imperial it measures 4ft 6in x 6ft 3in, useful if you're replacing a mattress on an older bed frame sized in feet and inches.
This size suits you if...
You share a bed with a partner in a room around our suggested minimum of 2.6m x 2.8m and still want bedside tables on both sides, or you're setting up a guest room for visiting couples who prefer a firm mattress.
Consider another size if...
You and your partner want more than 67.5cm each, or one of you is tall and wants extra length. We'd recommend the UK king instead, which needs a room of at least 2.7m x 2.9m.
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FAQ's
Is the Sealy PostureLux Wilton UK double big enough for two people?
For most couples, yes. The UK double gives you 67.5cm each, which is snug if one of you sprawls, but the UniKey edge system means more of that width is usable right to the side. If you regularly wake up nudged towards the edge, the extra room of a UK king may suit you better.
What size bedroom do I need for a Sealy PostureLux Wilton double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. At the minimum you'll fit the bed and a pair of small bedside tables, though a wardrobe may be tight. Measure where the doors and drawers open too, since a 135 x 190cm bed fills more of the floor than you'd expect.
Sealy PostureLux Wilton UK double or UK king for a couple?
The UK double is 15cm narrower and 10cm shorter than the UK king, giving each of you 7.5cm less width. The UK king gives 75cm each but needs a room of at least 2.7m x 2.9m. If your bedroom sits closer to 2.6m x 2.8m, the UK double keeps space to walk round the bed.
What sheets and duvet fit the Sealy PostureLux Wilton double?
Standard double sheets and a 200 x 200cm double duvet fit. The mattress is 29cm deep, so check that any fitted sheet you buy has deep enough pockets to tuck under comfortably, as shallower budget sheets can ride up at the corners on a mattress of this depth.
Will a Sealy PostureLux Wilton UK double fit up narrow stairs?
Measure first. You'll be carrying a 135 x 190cm mattress, 29cm deep, so check the tightest turn on the stairs and the width of the landing, especially in older terraces and compact new builds. Once you know it will go up, compare the retailers listed on this page for the UK double.