Sealy Ortho Plus Silver Memory Double Mattress
The Sealy Ortho Plus Silver Memory Mattress pairs a memory foam comfort layer with Sealy's PostureTech CS spring system, which means you get body-shaping pressure relief on top with responsive support underneath.
- Memory foam eases pressure points
- Support that follows how you move
- Firmer edges for sitting & dressing
£429
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Sealy Ortho Plus Silver Memory Mattress
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Mattress details
Mattress
Sealy Ortho Plus Silver Memory Mattress
Size
Firmness
Medium Firm
Construction
Memory Foam
Depth (cm)
25
Layers
2
Layer Details
MemorySense Foam PowerPack
A comfort layer that adapts to the shape of your body, cocooning you in soft foam. It relieves pressure on the parts of your body that bear the majority of your weight, typically hips and shoulders.
PostureTech CS Spring System with EdgeGuard
Sealy's adaptive spring system responds to subtle shifts in body weight and pressure, giving localised support rather than a uniform push-back. High-density EdgeGuard foam strips wrapped around the inside of the springs firm up the edges of the bed.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- The classic couples' footprint: At 135 x 190cm, the UK double gives two sleepers room to share in a bedroom where a UK king would crowd the walls.
- Firm edges make the width go further: EdgeGuard foam strips firm up the perimeter, which means you can use the full 67.5cm each without that roll-off feeling near the side.
- Fits rooms with furniture in them: Allow at least 2.6m x 2.8m and you should still manage a wardrobe, drawers and walking space on both sides of the bed.
- Easy to dress: Standard double sheets and a 200 x 200cm double duvet are stocked everywhere, at every price point.
- Support that suits two different sleepers: The PostureTech CS springs respond locally to each body, so a heavier partner shifting position won't tilt the whole surface towards them.
This size suits you if...
You share the bed every night and want the traditional couples' size that fits a typical UK bedroom, you sleep alone but like space to spread out, or you're furnishing a guest room that needs to cope with visiting couples. It also suits you if your room measures at least 2.6m x 2.8m, which leaves space for bedside tables on both sides.
Consider another size if...
You and your partner each want more than 67.5cm of width, perhaps because one of you sleeps restlessly. We'd recommend the UK king instead: it's 15cm wider and 10cm longer than the UK double, and we suggest a room of at least 2.7m x 2.9m for it.
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FAQ's
Is the Sealy Ortho Plus Silver UK double wide enough for two adults?
For most couples, yes. The UK double gives 67.5cm each for two people sharing, the long standing British standard. The EdgeGuard foam around the spring unit helps here, because the edges stay supportive rather than sagging, so neither of you loses usable width. Broader or restless couples may prefer the extra 15cm the UK king adds.
Will the UK double fit up a narrow staircase?
This is the question to take seriously with this mattress, because Sealy delivers it flat rather than rolled and boxed. You'll be moving a rigid 135 x 190cm mattress, so measure any turning stairs in an older terrace or a tight new build landing before ordering. If access is genuinely awkward, the UK single or UK small double are easier to manoeuvre.
Can I fit bedside tables both sides with the Sealy Ortho Plus Silver double?
Usually, yes. We suggest a room of at least 2.6m x 2.8m for a UK double, and around 3m x 3m is the comfortable norm. At the minimum you'll fit slim tables on both sides with walking space; the roomier figure lets you add a wardrobe and drawers without the bed feeling squeezed in.
How much bigger is the UK king than the UK double?
The UK double is 15cm narrower and 10cm shorter than the UK king, and the UK king needs a bigger room: we suggest at least 2.7m x 2.9m for it, against 2.6m x 2.8m for the UK double. If your bedroom sits between those figures, the UK double is the safer choice, at the cost of some sharing space.
Is the UK double a good size for a guest room?
It's the usual pick, because it handles visiting couples as well as solo guests, and double bedding is cheap and easy to find. The medium firm feel suits most back and combination sleepers, a sensible middle ground when you can't predict who'll be sleeping on it. Just check the access route first, since this mattress arrives flat.