Hypnos Imperial Ortho Supreme Small Double Mattress
The Hypnos Imperial Ortho Supreme is a firm pocket sprung mattress from Hypnos, an NBF-approved manufacturer.
- Firm feel for back & heavier sleepers
- Helps keep your spine aligned
- Wool & cotton regulate temperature
£1,099
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Hypnos Imperial Ortho Supreme Mattress
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Mattress details
Mattress
Hypnos Imperial Ortho Supreme Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Wool
Orthopaedic
Natural
Depth (cm)
28
Layers
5
Layer Details
Cover
An unbleached cotton cover that achieves fire resistance without FR chemicals, which means a cleaner, fresher sleep surface. It feels natural rather than synthetic against your bedding.
eOlus™ Fibres
Resilient eOlus fibres sit just beneath the cover, offering body support while letting air and moisture pass through easily. In practice, that means less heat building up around you overnight.
RWS Certified British Wool
Layers of British wool, certified by the Responsible Wool Standard, cushion your whole body so you dip into the surface just the right amount. Wool also insulates naturally, keeping you warmer in winter.
Sustainably Sourced Cotton
Responsibly sourced cotton wicks away excess moisture, which means the surface stays feeling fresh through the night. It works alongside the wool to regulate temperature all year round.
ReActive™ 7-Turn Pocket Springs
A support unit of ReActive 7-turn pocket springs, each moving independently to align your spine as you change position. That translates to targeted support at your hips and shoulders rather than a one-feel-fits-all base.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- Real width for one sleeper: At 120cm across, the UK small double is 30cm wider than the UK single, which means a solo adult can starfish without an elbow off the edge.
- Firm support in a compact footprint: The ReActive 7-turn pocket springs give the same targeted, firmer support in this size, useful for a heavier solo sleeper in a smaller room.
- Fits rooms a double would overwhelm: The UK small double is 15cm narrower than the UK double, which can be the difference between a door that clears the bed and one that doesn't.
- Natural fillings suit a snug room: Wool and cotton breathe better than foam, helpful in a compact or loft bedroom where warm air has less space to circulate.
- Copes with occasional sharing: The individually moving springs limit disturbance if a visiting couple shares it for a weekend, though it stays a solo size for nightly use.
This size suits you if...
You sleep alone but have outgrown a UK single and want genuine stretching room, your bedroom or loft conversion can't spare the width a standard double demands, or you're furnishing a guest room where couples stay occasionally rather than nightly. It also suits a teenager moving up from a single in a room where floor space still matters.
Consider another size if...
You share the bed every night, because 120cm is a squeeze for two adults long term. We'd recommend the UK double instead: it's 15cm wider, the same length, and we suggest a room of at least 2.6m x 2.8m for it.
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FAQ's
Is the Hypnos Imperial Ortho Supreme small double big enough for a couple?
For occasional nights, yes. The individually responding pocket springs mean one person turning over shouldn't wake the other, and the firm build resists roll-together. For a couple sharing every night, 120cm of width is tight, and we'd point you to the UK double of this mattress, which is 15cm wider.
What room size do I need for a small double Hypnos Imperial Ortho Supreme?
We suggest a room of at least 2.4m x 2.8m. That leaves space to walk around the bed and open drawers or a wardrobe. It's our own guidance rather than the manufacturer's, but it's a sensible floor for a box room, studio or loft conversion where this size makes most sense.
Is the small double Imperial Ortho Supreme good for a heavier solo sleeper?
It's a strong match. This is a firm mattress, and Hypnos aims it at back sleepers and heavier sleepers who need that firmer feel. In the UK small double you get 30cm more width than a UK single to move around on, while the ReActive springs support hips and shoulders individually.
Does a small double take standard double bedding?
You'll need a small double (4ft) fitted sheet, as a standard double sheet will bag at the corners of the 120 x 190cm mattress. A standard double duvet works fine on top. Since 4ft is a common UK size, sheets and mattress protectors are easy to find.
Should I choose the small double or the UK single for a teenager?
If the room can take it, the UK small double. It's 30cm wider than the UK single and exactly the same length, so it adds sprawling room without eating depth into the room. Given the firm feel here, a lightweight teenage side sleeper may find it slightly unyielding, so check the feel suits them first.