Sleepeezee Diamond Ortho Single 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
£279
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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
- Leaves room for everything else: At 3ft x 6ft 3in, it leaves space for a desk, toy storage and a wardrobe, and we suggest allowing at least 2.1m x 2.8m of floor space.
- Steady support for one sleeper: The medium firm feel and 1000 independent pocket springs suit back sleepers and older teens, although a light child who sleeps on their side may find the shoulder area a little firm.
- Easier to flip: The mattress is double-sided and needs turning regularly, and a UK single is far easier to handle on your own than the UK king or UK super king.
- Two beds for guests: A pair of UK singles lets friends or siblings who don't want to share a bed sleep separately, each on their own springs with no dip in the middle.
- Kind to allergy-prone children: The hypoallergenic polyester fibre fillings are a sensible choice for a child's room where dust allergies are a concern.
This size suits you if...
You're furnishing a child's or teenager's room where the bed has to share the floor with a desk and a wardrobe, or you're setting up a spare room with two single beds so guests who aren't couples can sleep apart.
Consider another size if...
You share the bed with a partner, or you're an adult who likes room to spread out. We'd recommend the UK double instead, which gives 67.5cm each for two sharing; allow at least 2.6m x 2.8m for the UK double.
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FAQ's
Is the Sleepeezee Diamond Ortho UK single too deep for a cabin bed?
It may be. The mattress is 24cm deep, and many raised frames, including cabin beds, bunks and mid sleepers, set a maximum mattress depth so the safety rail stays high enough. Check the frame maker's guidance first. If their limit is below 24cm, choose a shallower mattress for that frame.
Is a UK single Diamond Ortho long enough for a tall teenager?
The UK single is 190cm long, or 6ft 3in, which suits most teenagers. If yours is already very tall and still growing, feet may reach the end. The UK king is 10cm longer than the UK single, although the UK king also needs a much bigger room.
How much bedroom space does a Sleepeezee Diamond Ortho single need?
We suggest at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk around the bed and open drawers, which matters in a box room or a spare room that also works as a study.
Two Diamond Ortho singles or one double for a guest room?
Two UK singles give guests more flexibility, because friends, siblings or a parent and child can each have their own mattress. A UK double gives 67.5cm each for two sharing and needs at least 2.6m x 2.8m. Couples who visit often may find the UK double a better fit.
Can a child's UK single Diamond Ortho be flipped by one person?
Sleepeezee doesn't publish a weight for this mattress, but the UK single is the smallest size in the range, so most adults can turn it without help. Regular flipping helps a double-sided mattress wear evenly, which is useful on a child's bed that may be used for many years.