MattressNextDay Cashmere Ortho 1000 Pocket British Wool Mattress
Mattress
MattressNextDay Cashmere Ortho 1000 Pocket British Wool Mattress
Size
Firmness
Firm
Construction
Depth (cm)
28
Layers
4
Layer Details
- Silk. Soft in texture and light in weight, silk forms the top comfort layer. It gives the sleep surface a gentle, luxurious feel.
- Cashmere. A rare filling that is softer and finer than wool, typically found in quality mattresses. It adds a touch of plushness above the firmer layers below.
- Authentic Traceable British Wool. This wool is 100% traceable from farm to shop and comes from British Cheviot sheep, known for a strong yet soft fleece. It provides a natural bounce and helps regulate your temperature through the night.
- 1000 Pocket Springs. Each spring sits in its own fabric pocket, so they work completely independently of one another. That means better pressure-relieving support that responds to your body rather than the whole bed moving at once.
Layer details from mattressnextday.co.uk product page, September 2026.
- The classic shared footprint: At 135 x 190cm, or 4ft 6in x 6ft 3in, the UK double is the long established two person size, and it fits rooms where a UK king would feel cramped.
- Room for bedside tables: In a typical UK bedroom, the UK double usually leaves space for tables on both sides, which a wider size often takes away.
- 67.5cm each for couples: Two people sharing get 67.5cm each, enough for back and front sleepers who suit this firm tension and tend to move less at night.
- Pocket springs earn more in a shared bed: The 1,000 pocket springs move independently, which means a partner turning over in a UK double disturbs you less than an open coil bed of the same width would.
- Easy to dress cheaply: Double sheets and duvets are sold everywhere at every price point, a small saving that adds up if you're furnishing a home from scratch.
This size suits you if...
You share the bed every night and your room sits around the typical UK size, where a UK king would dominate; you sleep alone but want space to spread out, or to share with a pet who claims a corner; or you're kitting out a first flat or guest room and want the size visiting couples expect, on a budget that has to stretch across several rooms.
Consider another size if...
You and your partner both like space, or one of you is broad shouldered, and your room can take a bigger bed. We'd recommend the UK king instead: it gives 75cm each for two sharing, and we suggest a room of at least 2.7m x 2.9m for it.
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Is a UK double big enough for two on a firm mattress like this?
For most couples, yes. You get 67.5cm each, and because this is a firm mattress suited to back and front sleepers, you're less likely to roll around hunting for a comfortable position than on a softer bed. The 1,000 pocket springs also keep a partner's movement localised. Restless sleepers or broader builds may prefer the UK king.
What room size do I need for the Cashmere Ortho 1000 in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allowance covers walking space and, in most rooms, bedside tables on both sides. This is our own guidance rather than the manufacturer's, so measure your room and any alcoves or radiators before deciding.
Should I get the Cashmere Ortho 1000 in a UK double or a UK king?
It comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, and the UK king gives 75cm each for two sharing, 7.5cm more each than the UK double. If your bedroom meets our suggested 2.7m x 2.9m for the UK king and you share nightly, size up; otherwise the UK double is the sensible fit.
Is the UK double a good choice for a guest room?
It's the size most guest rooms are built around, because visiting couples can share it and a solo guest gets plenty of space. The firm tension suits occasional use well, since it holds its shape without needing to be broken in, and double bedding is cheap and easy to find in any style.
Will a UK double fit up narrow stairs in an older house?
Usually, yes. At 135cm wide with a pocket spring core, the UK double is the largest size most people can manoeuvre round a turning staircase or a tight landing without trouble, though it doesn't flex the way a rolled foam mattress does. Measure your tightest turn against the 135 x 190cm footprint first.