Hypnos Natural Sanctuary Ortho Small Double Mattress
The Hypnos Natural Sanctuary Ortho is a firm pocket sprung mattress from a National Bed Federation approved manufacturer.
- Firm support for back & front sleepers
- Wicks moisture, less clammy than foam
- Minimises partner disturbance
£799
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Hypnos Natural Sanctuary Ortho Mattress
More available sizes
Mattress details
Mattress
Hypnos Natural Sanctuary Ortho Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Orthopaedic
Natural
Eco-Friendly
Depth (cm)
28
Layers
4
Layer Details
Viscose Blend Breathable Sleep Surface
A soft viscose blend cover that promotes airflow, which means the sleep surface stays cooler and fresher through the night. It is the first thing you'll feel, and it softens the firm feel slightly.
eOlus™ Fibres
These fibres offer resilient body support while letting air and moisture pass through easily. In practice, that means cushioning that springs back rather than trapping heat the way dense foam can.
Sustainably Sourced Cotton
Natural cotton fibres are highly breathable and wick away excess moisture. If you're a hot sleeper, this is the layer doing much of the quiet work.
ReActive™ 7-Turn Pocket Springs
Hypnos's ReActive 7-turn pocket spring system uses 1200 individually responsive springs that work independently to adapt to your body's shape. That means support that follows your spine rather than pushing back as one flat unit, and less motion transfer between partners.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- Room to spread out alone: At 30cm wider than the UK single, this size lets a solo back or front sleeper shift position freely across a firm, even surface.
- Fits compact double bedrooms: It's 15cm narrower than the UK double, which can be the difference between a door that clears and one that doesn't in a box room or studio.
- 1200 springs, less roll-together: The ReActive 7-turn pocket springs respond individually, so even on a narrower shared surface each sleeper gets support that follows their own shape.
- Firm support for the guest room: For a spare room hosting occasional couples, the firm feel suits a wide range of visitors and won't sag between stays.
- Breathable natural fillings: Cotton and eOlus fibres wick moisture rather than trapping heat, useful in smaller rooms where air doesn't circulate as freely.
This size suits you if...
You sleep alone, have outgrown a single and want real stretching room without giving up the floor space a full double demands. It also fits if you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly, or a loft or box room where 15cm of width decides whether the bed fits at all.
Consider another size if...
You and a partner will share the bed every night, since 120cm gets snug for two firm-mattress sleepers who can't sink toward each other. We'd recommend the UK double instead, allowing at least 2.6m x 2.8m of room.
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FAQ's
Is a small double big enough for one adult on a firm mattress?
Comfortably, yes. The UK small double is 30cm wider than the UK single, and because this is a firm mattress you sleep on the surface rather than into it, so that extra width is all usable space for changing position through the night.
Will the Hypnos Natural Sanctuary Ortho small double work for a teenager?
It's a sensible step up for a teenager who has outgrown a single, since it adds 30cm of width while staying the same 190cm length, so the bed grows without swallowing the room. The firm feel suits back and front sleepers, though a lightweight side sleeper may find it a little hard on the shoulders.
Can a couple share the small double Hypnos Natural Sanctuary Ortho?
For occasional nights, yes, which is why it suits guest rooms and holiday lets. The 1200 pocket springs limit motion transfer between two people. For every night, 120cm is tight, and the UK double gives you 15cm more width at the same length.
What room size do I need for a small double mattress?
We suggest at least 2.4m x 2.8m, which leaves enough space to walk round the bed and open drawers. That's our own guidance rather than the manufacturer's, so treat it as a minimum for comfortable use, not a target.
Where can I buy the Hypnos Natural Sanctuary Ortho in a small double?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so check the live table rather than a cached figure elsewhere. Stock in the UK small double can move around, so it's worth checking back if your preferred retailer shows nothing today.