Hypnos Marlow Ortho Deluxe Super King 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
£1,264
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
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
- 90cm each, every night: Two people sharing get 90cm apiece, which means a partner who turns over constantly is far enough away that you simply stop noticing.
- Firm support holds its shape with extras aboard: The 1,200 ReActive 7-turn pocket springs respond to each body separately, so a child or dog climbing in disturbs their patch of the bed rather than yours.
- A large surface that stays cool: Wool and cotton comfort layers regulate temperature across the full 6ft width, useful when two adults and the occasional visitor are all generating heat.
- Double-sided build suits a bed this size: A UK super king takes real weight night after night, and being able to flip the mattress helps it wear evenly rather than dipping where each sleeper lies.
- The right scale for a big room: In a large master or period bedroom, this 6ft x 6ft 6in footprint sits in proportion where a UK king can look slightly lost.
This size suits you if...
You share the bed every night and want enough distance that a restless partner stops being your problem, children or a large dog regularly end up in with you and everyone still needs their share, or your master bedroom is generous enough that a smaller bed would look undersized. Your room should measure at least 3m x 2.9m by our guidance.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest, or you'd rarely use the extra width. We'd recommend the UK king instead: it's 30cm narrower, the same length, and needs at least 2.7m x 2.9m.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
How big is the Hypnos Marlow Ortho Deluxe in a UK super king?
It measures 180 x 200cm, or 6ft x 6ft 6in. That gives two people sharing 90cm each, and the mattress itself is 28cm deep, so allow for that when choosing a bed frame and fitted sheets.
Is the super king Hypnos Marlow Ortho Deluxe hard to flip?
It needs regular flipping, as it's double-sided, and at 180cm wide and 28cm deep this is realistically a two-person job. If you live alone or struggle with lifting, plan for help, or consider whether a smaller size of this mattress would be more manageable.
What room size do I need for this mattress in a super king?
We suggest at least 3m x 2.9m, with something nearer 3.5m x 3.2m feeling comfortable. That allows walking space on both sides and room for the door to swing. Measure your landing and any stair turns too, because a 180cm wide mattress is awkward to manoeuvre upstairs.
Should I get the Hypnos Marlow Ortho Deluxe in a UK king or a UK super king?
The UK super king is 30cm wider than the UK king and the same length. If one of you sleeps restlessly, or children and pets join you, that extra width earns the bigger room it demands. If your bedroom only meets the UK king's minimum of 2.7m x 2.9m, take the UK king.
Where can I buy the Hypnos Marlow Ortho Deluxe super king?
Availability varies by size, so the simplest route is to compare the retailers listed on this page. The prices shown here are updated as retailers change them, which matters on a larger size where the gap between sellers can be meaningful.