Hypnos Honley Extra Firm King Size Mattress
The Hypnos Honley Extra Firm is a pocket spring mattress built for people who want a genuinely firm surface.
- Extra-firm feel from springs, not foam
- Breathable wool, less clamminess
- Stiffer edges for sitting on
£1,398
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Hypnos Honley Extra Firm Mattress
More available sizes
Mattress details
Mattress
Hypnos Honley Extra Firm Mattress
Size
Firmness
Extra Firm
Construction
Pocket Spring
Wool
Depth (cm)
30
Layers
6
Layer Details
Cover
A soft viscose cover that's naturally breathable, which means the sleep surface feels a little fresher against your skin. It's the first line of temperature control before you reach the fillings.
Wool
Layers of wool sit just beneath the cover, giving cushioned comfort with natural insulation. Wool regulates temperature in both directions, so it helps in warm summers as well as cold winters.
Cotton and Polyester Blend
Two layers of a cotton and polyester blend increase airflow through the mattress. They also wick moisture away from your body, which matters if you tend to sleep warm.
eOlus™ Fibres
These fibres are made from recycled materials and spun into a slightly firmer, cushioning layer. They add to the extra firm feel while giving the mattress a sustainability credential.
Soft White Fibres
Soft synthetic fillings bring a cosier feel to balance the firmness beneath. They're durable and resilient, so the comfort layer should hold its shape over time.
Pocket Springs
1000 ReActivePro™ springs, each in its own fabric pocket, respond to your body individually and reduce partner disturbance. Three outer rows of firmer gauge springs increase edge stability, so you can use the full width of the bed.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Proper space for two: At 75cm each for two people sharing, you can both settle on your backs, the position this extra firm build suits best, without competing for room.
- Length for taller sleepers: The UK king is 10cm longer than the UK double, which means anyone approaching six foot stops finding their feet at the edge.
- Less disturbance across the width: The 1000 pocket springs respond individually, so on a 150cm width an early alarm on one side barely registers on the other.
- Usable edges, full width: Three outer rows of firmer gauge springs stiffen the sides, so you can sleep right up to the edge of the 150cm width rather than drifting to the middle.
- Room fit you can plan: We suggest a room of at least 2.7m x 2.9m for a UK king, which leaves walking space once wardrobes and bedside tables are in.
This size suits you if...
You share the bed every night and a double has started to feel cramped, especially on a firm surface where neither of you rolls towards the middle. It also fits if one of you is on a different schedule and wants to get up without waking the other, or if either partner is tall enough that the extra 10cm of length over a UK double genuinely matters.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king. In that case the UK double would suit you better, and we suggest allowing at least 2.6m x 2.8m for it.
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FAQ's
Is a UK king big enough for a couple on the Hypnos Honley?
Yes, comfortably for most couples. Two people sharing get 75cm each, and because the Honley is extra firm you lie on the surface rather than sinking into it, so that width stays usable. The pocket springs also limit how much movement travels across, which helps if one of you wakes earlier than the other.
Will the king size Hypnos Honley fit in my bedroom?
The mattress itself is 150 x 200cm, but the room needs more than that. We suggest at least 2.7m x 2.9m for a UK king, and 3.2m x 3.2m feels comfortable. Measure with wardrobes and drawers in mind; new build master bedrooms in particular can feel tighter than the floor plan suggests once furniture is in.
Is the UK king Honley long enough for someone over six foot?
At 200cm, the UK king is 10cm longer than the UK double, and that difference is often the whole point of the upgrade for taller sleepers. Since the Honley suits back and front sleepers, who tend to lie at full stretch, the extra length is felt more here than on a mattress that encourages curling up on your side.
Should I choose the king or super king Hypnos Honley?
The UK super king is 30cm wider than the UK king, with both the same length, so it's purely a width decision. If you share with a restless partner, or a dog that treats the bed as its own, the extra width helps. We suggest at least 3m x 2.9m of room for the UK super king, so check your space first.
How do I compare prices on the Honley in a UK king?
Use the retailer table on this page. The prices shown are updated as retailers change them, so it's a more reliable guide than a figure written into the text. Extra firm pocket sprung mattresses with natural wool fillings sit at the pricier end of the market, so it's a size and spec where checking live prices genuinely pays off.