Hypnos Orthos Support 6 Firm Mattress
Mattress
Hypnos Orthos Support 6 Firm Mattress
Size
Firmness
Firm
Construction
Depth (cm)
Layers
2
Layer Details
- Cotton comfort layers. Four layers of cotton sit at the top of the mattress. Cotton is breathable and wicks moisture, which means a cooler, drier feel through the night than synthetic fillings tend to give.
- ReActive 6-turn pocket springs. The support core uses Hypnos's ReActive 6-turn pocket springs, each one working independently. That means the mattress contours to your body and limits motion transfer across the bed.
Layer details from mattressman.co.uk product page, September 2026.
- Fits where space is tight: At 90cm wide it leaves room for a wardrobe, desk and toy storage in a child's bedroom, or two beds plus a walkway where siblings share.
- Firm support for growing sleepers: The genuinely firm feel suits older children and teens who sleep on their back or front and need a flat, supportive surface rather than a soft one.
- Independent springs, single footprint: Hypnos's ReActive 6-turn pocket springs respond to your weight individually, which means shaped support even across a narrow 90cm surface.
- Breathable cotton layers: Four layers of cotton above the springs wick moisture, which means a cooler night for teenagers and warm sleepers in smaller, stuffier rooms.
- Guest room ready: A firm, traditional build holds its shape well under occasional use, so it suits a spare room that doubles as an office between visits.
This size suits you if...
You're buying for one person: a teenager who has outgrown a softer children's mattress, a single adult in a compact room or first flat, or a guest bed that needs to earn respect from firm-mattress fans. It also fits where the frame is already provided, such as student accommodation, provided the frame takes a standard 90 x 190cm UK single.
Consider another size if...
You're an adult who shares the bed, or you simply want more width than 90cm to stretch out in. The UK small double is 30cm wider at the same length, and we suggest at least 2.4m x 2.8m of floor space for it.
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Is the Hypnos Orthos Support 6 in a UK single suitable for a child?
For older children and teens who sleep on their back or front, yes: the firm pocket sprung support and breathable cotton layers suit a growing sleeper well. Lightweight side sleepers may find it a little too solid at the shoulder and hip, though, so consider how your child actually sleeps before choosing this one.
Will the UK single Orthos Support 6 fit a bunk or mid sleeper frame?
The 90 x 190cm footprint matches standard UK bunk and mid sleeper frames. Depth is the thing to check: raised frames often set a maximum mattress height for the guard rail to work, and Hypnos doesn't publish a depth in the details we have, so confirm with the retailer before ordering for a bunk.
How much room does a UK single mattress need?
The mattress itself is 90 x 190cm, and we suggest allowing at least 2.1m x 2.8m of floor space so you can walk around it and open drawers. That makes it a comfortable fit in box rooms, loft conversions with a narrow usable strip under the slope, and spare rooms that double as an office.
Is a UK single big enough for an adult?
For one adult, yes, though at 90cm wide it's snug if you move around a lot in your sleep. The firm feel of the Orthos Support 6 helps here, since you lie on the surface rather than sinking into a dip. If your room allows, the UK small double is 30cm wider at the same length.
What bedding fits this mattress in a single?
Standard UK single sheets and a single duvet, 135 x 200cm, fit the 90 x 190cm mattress. Single bedding is the cheapest and most widely stocked size in UK shops, a small but genuine saving over the life of the mattress, and handy for guest rooms where you want spare sets on hand.