Sleepeezee Diamond Ortho Double Mattress
The Sleepeezee Diamond Ortho is a medium firm pocket sprung mattress with 1000 pocket springs housed in individual cotton pockets.
- Medium-firm support for back sleepers
- Turnable to wear more evenly
- Hypoallergenic fibre fillings
£359
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Sleepeezee Diamond Ortho Mattress
More available sizes
Mattress details
Mattress
Sleepeezee Diamond Ortho Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Orthopaedic
Depth (cm)
24
Layers
3
Layer Details
Cover
A breathable Belgian damask fabric cover, which means air can move through the sleep surface rather than getting trapped. That helps you stay a little cooler through the night.
Comfort Fillings
Soft white fibre fillings made from 100% polyester. These give a gentle cushioned surface over the firmer springs beneath.
Support System
1000 pocket springs, each mounted in its own separate cotton pocket. Because the springs work completely independently, the mattress responds to your shape and reduces movement transferring across the bed.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- Room for two in an ordinary bedroom: We suggest at least 2.6m x 2.8m for a UK double, so a second bedroom or first flat can still hold a wardrobe and a chest of drawers.
- Movement stays on its own side: At 67.5cm each you lie closer together than on a UK king, which makes the independently pocketed springs more useful here, since fewer of your partner's turns reach you.
- Steady support for a shared bed: The medium firm feel suits back sleepers and heavier builds, although a lighter side sleeper sharing the bed may find it presses slightly at the shoulder.
- Space left for bedside tables: Around 3m x 3m is the comfortable norm for a UK double, which usually leaves room for a bedside table on each side and a clear path to the door.
- Easy to dress for guests: Standard double sheets fit it and a 200 x 200cm double duvet covers it, so setting up a guest room for visiting couples needs nothing specialist.
This size suits you if...
You share the bed every night and your bedroom sits around our suggested minimum of 2.6m x 2.8m, or you're setting up a guest room where visiting couples need proper sleeping space without the bed swallowing the floor.
Consider another size if...
You both want more than 67.5cm of width each, or one of you sprawls. We'd recommend the UK king instead, giving 75cm each; allow at least 2.7m x 2.9m for a UK king.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
How much space does each person get on a Sleepeezee Diamond Ortho UK double?
Two people sharing the UK double get 67.5cm each. A UK king gives 75cm each, so the UK double gives 7.5cm less per person. For most couples of average build that is enough, and the pocket springs help keep your partner's movement from reaching your side.
Sleepeezee Diamond Ortho UK double or UK small double for a smaller room?
The UK double is 15cm wider than the UK small double, and both are the same length. We suggest at least 2.6m x 2.8m for a UK double and 2.4m x 2.8m for a UK small double, so if your room falls between the two, the UK small double is the more realistic fit.
Is the Diamond Ortho UK double long enough for tall sleepers?
The UK double is 190cm long, or 6ft 3in, the same length as the UK single and UK small double. If you or your partner are tall and your feet already reach the end of the bed, the UK king is 10cm longer, and we suggest at least 2.7m x 2.9m for it.
Will a Sleepeezee Diamond Ortho double fit in a second bedroom?
In most cases, yes. We suggest a room of at least 2.6m x 2.8m for a UK double, with around 3m x 3m giving you comfortable space for a wardrobe, drawers and bedside tables. Measure your floor before choosing, and remember that wardrobe doors need clearance to open.
Is a Diamond Ortho UK double a good size for one person and a pet?
It suits that well. The UK double is 45cm wider than the UK single, so a dog or cat can claim a corner and you still have room to stretch out. The separately pocketed springs also mean a pet shifting position is less likely to wake you.