MattressNextDay Daphne Ortho Traditionally Sprung Mattress
Mattress
MattressNextDay Daphne Ortho Traditionally Sprung Mattress
Size
Firmness
Firm
Construction
Depth (cm)
30
Layers
3
Layer Details
- Soft Knitted Cover. A breathable knitted cover that's soft to the touch, which means the firm build doesn't feel harsh against your skin. It gives the mattress a slightly more luxurious finish than you might expect at this price.
- Soft White Fibres. Fibre fillings made from 100% polyester sit beneath the cover, offering good recovery and durability. In practice, this means a comfort layer that springs back rather than developing dips quickly.
- Open Coil Springs. Interlaced coils of high-tensile steel joined together in a lattice, which means the springs work as one connected system to support your body. This is a traditional construction, so expect firm, even support rather than the isolated contouring of pocket springs.
Layer details from mattressnextday.co.uk product page, September 2026.
- The motion transfer trade-off disappears: Open coils pass movement across the bed, which matters for couples but not here, so the UK single sidesteps this mattress's main structural drawback.
- Compact footprint for busy rooms: At 90cm wide it leaves space for a desk, wardrobe and toy storage in a child's room, or two beds with a walkway between in a shared one.
- Firm support for growing sleepers: The high-tensile steel lattice gives even, firm support across the whole surface, which suits older children and teens who need a stable base rather than a soft sink.
- Guest and office rooms: In a spare room doubling as a study, a UK single keeps the desk usable while still offering a proper 30cm-deep mattress for visitors.
- Cheap, easy bedding: Standard single sheets and a single duvet (135 x 200cm) fit, and both are the most widely stocked and lowest-cost bedding of any UK size.
This size suits you if...
You're buying for a child's or teenager's room where the bed shares floor space with a desk and storage, you're kitting out a student room or first flat where the frame came with the property but the mattress didn't, or you want a firm guest bed in a spare room that also has to function as an office. It also suits solo adults who prefer a firm surface and a small footprint.
Consider another size if...
You're an adult who spreads out at night, or you're sharing the bed, since 90cm is tight for one restless sleeper and impossible for two. We'd recommend the UK double instead, which is 45cm wider and needs a room of at least 2.6m x 2.8m.
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Will the UK single Daphne Ortho fit a bunk bed or mid sleeper?
The width and length match standard UK bunk frames, but check the depth first. At 30cm this is a fairly deep mattress, and many bunk and cabin beds specify a maximum depth so the guard rail still sits safely above the mattress surface. Measure your frame's stated limit before ordering, particularly for a top bunk.
Is the UK single Daphne Ortho suitable for a child?
For older children and teens, yes: the firm open coil support suits growing bodies, and it's hypoallergenic, which helps in a child's room. Lighter, younger children may find the firm feel a little unforgiving, as they won't sink into it much. It meets the BS7177: 2008 fire safety standard.
How much room does a UK single mattress need?
We suggest allowing at least 2.1m x 2.8m of floor space. That leaves enough clearance to walk around the bed and open drawers or wardrobe doors. In a loft conversion, the 90cm width also makes it easier to tuck the bed under a sloped ceiling where a wider size wouldn't sit comfortably.
Should I get one UK single or a double for a guest room?
Two UK singles suit rooms hosting guests who don't share a bed, such as visiting grandchildren or friends. If your guests are mostly couples, the UK double is 45cm wider than the UK single, the same length, gives 67.5cm each for two sharing, and needs a room of at least 2.6m x 2.8m.
Does the open coil construction matter in a single?
Less than in larger sizes. The main drawback of open coils, movement travelling across the lattice and disturbing a partner, is irrelevant when one person sleeps on the mattress. What remains is the upside: even, firm support across the whole 90cm surface, with polyester fibres and a soft knitted cover keeping it from feeling harsh.