Hypnos Majesty Ortho Sublime King Size Mattress
The Hypnos Majesty Ortho Sublime is a firm, traditionally built pocket sprung mattress from Hypnos, an NBF-approved manufacturer making its mattresses in the UK.
- Sleeps cooler than foam-heavy beds
- Responsive support as you move
- Nine sizes, Single up to Emperor
£1,499
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Hypnos Majesty Ortho Sublime Mattress
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Mattress details
Mattress
Hypnos Majesty Ortho Sublime Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Rolled
Wool
Memory Foam
Depth (cm)
30
Layers
5
Layer Details
Cover
An unbleached, chemical-free cotton cover in Belgian damask, which means a soft, breathable sleeping surface without harsh treatments. Damask is a tightly woven fabric that wears well over time.
Comfort fillings: British wool
Insulating British wool cushions the whole body, which means gentle pressure relief rather than the sink-in feel of memory foam. Wool also helps keep the surface temperate.
Comfort fillings: cotton
Cotton wicks away excess moisture and works alongside the wool to regulate temperature. In practice, that means a drier, more comfortable feel in both summer and winter.
Comfort fillings: Solotex and eOlus fibres
Recycled Solotex and eOlus fibres add to the cushioning while promoting airflow. That extra breathability matters most if you tend to overheat at night.
Support system: ReActive pocket springs
A core of ReActive 8-turn pocket springs supports key areas of the body. Each turn lets the spring react faster to your movements, which means the mattress adjusts as you change position rather than lagging behind.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- 75cm each for two people sharing: You each get 75cm of width, so shifting position at 3am no longer means negotiating for territory.
- 15cm wider than a UK double: The UK king is 15cm wider than the UK double, which is often the difference between sleeping close by choice and sleeping close by necessity.
- Extra length for taller sleepers: At 200cm the UK king is 10cm longer than the UK double, welcome if one of you is approaching six foot and tired of feet hanging off the end.
- Springs that keep disturbance down: The ReActive 8-turn pocket springs respond individually to movement, so an early alarm on one side is less likely to wake the other across this wider surface.
- Natural fillings across a bigger surface: RWS certified British wool and moisture-wicking cotton keep the sleeping surface temperate, useful when two bodies are sharing the bed all night.
This size suits you if...
You share the bed every night and a double has started to feel cramped, or one of you is tall enough that the 200cm length matters as much as the width. It also suits couples on different schedules, since the pocket springs and the extra room between you make an early departure easier to sleep through. Your bedroom should be at least 2.7m x 2.9m.
Consider another size if...
Your room is under our suggested 2.7m x 2.9m minimum, or you sleep alone. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m and still gives a solo sleeper generous space.
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FAQ's
Is the Hypnos Majesty Ortho Sublime UK king big enough for a couple?
Yes, comfortably for most. At 150 x 200cm it gives 75cm each for two people sharing, which is enough to change position without disturbing each other. If a dog routinely joins you and takes more than its share, or you both like to sprawl, the UK super king adds another 30cm of width.
What room size do I need for a UK king Hypnos Majesty Ortho Sublime?
We suggest a room of at least 2.7m x 2.9m for a UK king, which leaves space to walk round the bed and open drawers. New build master bedrooms can be tighter than they look once wardrobes go in, so measure the usable floor rather than the room on the plan.
Is the UK king long enough for someone over six foot?
Usually, yes. The UK king is 200cm long, 10cm longer than the UK double, and for many taller sleepers that length is the real reason to upgrade. If you're well over six foot, sizing up to the UK super king won't help here: the UK king and the UK super king are the same length.
Should I choose the UK king or the UK super king in this mattress?
The UK king suits most couples: plenty of space each without dominating the room. The UK super king is 30cm wider, but we suggest at least 3m x 2.9m of floor space for it. If your room clears that and you often share with children or pets, the UK super king would suit you better.
Where can I compare prices for this mattress in a UK king?
Prices for the Hypnos Majesty Ortho Sublime in a UK king vary by retailer and change often, so compare the retailers listed on this page. The prices shown here are updated as retailers change them, which makes it a more reliable guide than a figure quoted in a review written months ago.