Hypnos Marlow Ortho Deluxe Single Mattress
The Hypnos Marlow Ortho Deluxe is a firm pocket spring mattress built around 1,200 of Hypnos' ReActive 7-turn springs, which means the surface adjusts to your body shape rather than pressing back uniformly.
- Firm support for back & front sleepers
- Wool helps stop you overheating
- Double-sided for a longer life
£758
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Hypnos Marlow Ortho Deluxe Mattress
More available sizes
Mattress details
Mattress
Hypnos Marlow Ortho Deluxe Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Orthopaedic
Depth (cm)
28
Layers
4
Layer Details
Wool comfort layer
Sustainably sourced British wool that regulates temperature, which means you're less likely to overheat on a firm, dense mattress. Wool also handles moisture well, keeping the sleep surface feeling fresh.
Cotton comfort layer
Natural cotton fibres that wick away moisture and help regulate body temperature. Paired with the wool above, this gives a breathable natural top rather than a synthetic one.
eOlus™ recycled fibre pad
Made from recycled plastic bottles, with a vertical structure that's firmer than normal fillings. It sits next to the spring unit, adding support while soothing pressure points.
ReActive™ 7-turn pocket springs
Hypnos' own pocket springs, designed to actively respond to your body shape for full-body personalised support. A dual heating treatment gives the springs memory and helps them retain their height over time.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Leaves the floor free in small rooms: At 90cm wide, this single fits alongside a wardrobe, desk and toy storage in a child's bedroom without swallowing the walkway.
- Firm support for growing sleepers: The 1,200 ReActive 7-turn pocket springs adjust to body shape, which means a teenager gets proper spinal support rather than a saggy hand-me-down feel.
- Natural layers for a warm bedroom: Wool and cotton comfort layers regulate temperature, useful in a small room or loft space that heats up quickly in summer.
- Two beds still fit in one guest room: The 90cm width means a pair of singles can share a spare room with a walkway between, something no double allows.
- Easier to flip at this size: This mattress is double-sided and needs regular turning; at 90 x 190cm that job is far more manageable than it would be in the larger sizes.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm single duvet fit, and both are the most widely stocked bedding of any UK size.
This size suits you if...
You're buying for a child or teenager who needs firm, durable support through their growing years, or you're kitting out a guest room, spare room or first flat where floor space is limited. It also suits a solo adult who sleeps on their back or front and wants a properly firm surface in a room where anything wider than 90cm would crowd the space.
Consider another size if...
You're an adult who spreads out at night, or you sometimes share the bed. The UK single's 90cm width feels restrictive for restless solo sleepers, so we'd recommend the UK double instead; allow at least 2.6m x 2.8m of floor space for it.
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FAQ's
Will the Hypnos Marlow Ortho Deluxe single fit a bunk bed?
The 90 x 190cm footprint matches standard UK bunk frames, but the depth is the sticking point. This mattress is 28cm deep, and many bunk, cabin and mid sleeper frames specify a maximum depth so the guard rail stays effective. Check your frame's maximum mattress depth before buying; for a top bunk especially, 28cm is often too tall.
Is the UK single Hypnos Marlow Ortho Deluxe a good choice for a child?
For older children and teenagers who sleep on their back or front, the firm pocket spring support is a sensible long-term buy, and the wool and cotton layers keep a small bedroom's heat in check. Lightweight side sleepers are the exception: a firm surface can press against shoulders and hips, so consider how your child actually sleeps first.
What room size do I need for a single Hypnos Marlow Ortho Deluxe?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk around the bed and open drawers or wardrobe doors. Remember this mattress needs flipping regularly, so a little clearance around the frame makes that job much easier than wrestling it in a tight corner.
Is a UK single long enough for a tall teenager?
The UK single is 190cm long, which is 6ft 3in, so most teenagers have room to grow into it. Very tall sleepers may want more; the UK king is 10cm longer, although it is also 60cm wider and needs a room of at least 2.7m x 2.9m, which rules it out for most children's bedrooms.
Can two Hypnos Marlow Ortho Deluxe singles share one guest room?
Often, yes. Each mattress is 90cm wide, so two singles with a walkway between them suit a guest room that hosts couples and solo visitors alike, or siblings sharing. Measure your room against two beds plus access space rather than our single-bed minimum of 2.1m x 2.8m, and compare the retailers listed on this page for current prices.