Firmness
Firm
Type
Orthopaedic
Depth (cm)
30
Number of Layers
3
Trial Period (nights)
Warranty (years)
1
Price Range
£259 to £379
Best Sleeping Position(s)
Certifications
Assessed from MattressNextDay's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
This suits you if you prefer a firm surface and want to keep the cost down. The open coil system supports the body across the whole mattress, which means less sinking and an easier time changing position at night. It's hypoallergenic and vegan friendly, made by an NBF-approved manufacturer, and meets the BS7177: 2008 fire safety standard. MattressNextDay offers free next day delivery, helpful if your old mattress has given up suddenly. The trade-off is honesty about what you're getting: a simple, traditional build with a 1-year guarantee rather than the longer cover pricier mattresses often carry. Yes, it's basic, but at this price the fundamentals are done properly.
Key Features & what's inside
- 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.
Who's it NOT for?
Lightweight side sleepers may find the firm feel puts pressure on shoulders and hips. Because open coils are joined in a lattice, movement transfers across the bed more than with pocket springs, so couples who disturb each other easily might look elsewhere. The 1-year guarantee is also shorter than many brands offer.
MattressNextDay Daphne Ortho Traditionally Sprung Mattress
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How firm is the Daphne Ortho mattress?
MattressNextDay describes it as firm, and owner feedback backs that up, with some reviewers finding it firmer than they expected. That's ideal if you sleep on your back or prefer a supportive surface, but lighter side sleepers may find it a little unforgiving.
What sizes does the Daphne Ortho come in?
It's available in UK Single, Small Double, Double, King and Super King, priced from £259 to £379 depending on size.
Does the Daphne Ortho have pocket springs?
No, it uses open coil springs: interlaced high-tensile steel coils joined in a lattice. This gives even, firm support across the whole mattress, though it transfers movement more than pocket springs, so a restless partner is more noticeable.
How long is the guarantee on the Daphne Ortho?
MattressNextDay offers a 1-year guarantee. That's shorter than many mattresses carry, which is part of the trade-off for the low price.
Is the Daphne Ortho mattress hypoallergenic?
Yes. It's hypoallergenic and vegan friendly, with fillings made from 100% polyester, so there are no animal-derived materials. It also meets the BS7177: 2008 fire safety standard and is made by an NBF-approved manufacturer.
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