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.
- Room to spread out alone: At 120cm wide, that's 30cm more than a UK single, so a solo adult can stretch, roll and change position without meeting the edge.
- Fits where a double won't: It's 15cm narrower than a UK double, which can be the difference between a door clearing and a bedroom that feels cramped.
- Firm support across the full width: The open coil lattice supports the body evenly edge to edge, so a solo sleeper using the whole surface won't find soft spots.
- Sensible for occasional sharing: Open coils transfer movement, but for a guest room used by couples a few nights a year that matters far less than it would nightly.
- Standard 4ft sizing: The small double is an established UK size, so frames and small double fitted sheets are easy to find, and a standard double duvet works on top.
This size suits you if...
You sleep alone and have outgrown a UK single but your room can't spare the width a UK double needs, you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly, or you're fitting a teenager's room and want them a proper adult-width bed without losing all the floor space.
Consider another size if...
You share the bed every night, because the open coil lattice transfers movement and 120cm is snug for two. We'd recommend the UK double instead, which gives 67.5cm each and needs a room of at least 2.6m x 2.8m.
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Is a small double Daphne Ortho big enough for a couple?
For occasional nights, yes. For every night, we'd hesitate. The UK small double is 15cm narrower than a UK double, and the Daphne Ortho's open coil springs are joined in a lattice, so one person's movement carries across the bed. It suits a guest room well; nightly sharers would be better served by the UK double.
What room size do I need for a small double mattress?
We suggest at least 2.4m x 2.8m for the UK small double, which leaves enough space to walk round the bed and open drawers. That's our own guidance rather than the manufacturer's. If your room stretches to 2.6m x 2.8m, the UK double becomes an option worth weighing.
How much bigger is the small double than the single?
The UK small double is 30cm wider than the UK single, and the two are the same length at 190cm. That extra width is the whole point: a teenager or solo adult who has outgrown a single gets genuine spreading room, and the firm open coil support runs evenly across all of it.
Will the Daphne Ortho small double fit in a loft conversion or box room?
It's a strong candidate for exactly those rooms. At 120cm wide it needs noticeably less floor than a UK double, which often decides whether you can still stand beside the bed under a sloped ceiling or get the door to clear. Measure against our suggested minimum of 2.4m x 2.8m before ordering.
Where can I buy the Daphne Ortho in a UK small double?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them. Stock moves around, so checking the live table beats relying on any single shop. Whichever retailer you choose, the mattress itself is the same firm, traditionally sprung build at 120 x 190cm.