Spring King Wool Luxury Pocket King Size Mattress
The Spring King Wool Luxury Pocket Mattress is a medium-feel pocket spring mattress with a layer of natural wool, which means you get springy support alongside a filling that helps regulate temperature through the night.
- Natural wool keeps temperature steady
- Minimises partner disturbance
- Eases pressure at shoulders & hips
£299
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Spring King Wool Luxury Pocket Mattress
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Mattress details
Mattress
Spring King Wool Luxury Pocket Mattress
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Wool
Depth (cm)
32
Layers
4
Layer Details
Quilted Cover
A soft, viscose quilted cover designed to enhance breathability. In practice that means a fresher-feeling sleep surface rather than one that traps warmth.
Profiled Foam
A generous layer of profiled foam that softens with your body's warmth and contours to your curves. You should feel gentle pressure relief at the shoulders and hips rather than a flat, unyielding surface.
Natural Wool
Natural wool adapts to your body shape while adding a touch of bounce. Wool is naturally temperature-regulating, which means it helps you stay warm in winter and cooler in summer.
Pocket Springs
Individually pocketed springs work completely independently of one another, which means support tailored to each part of your body. It also reduces motion transfer, so you feel less of a partner's movement.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- More room each: At 75cm per person, you get 7.5cm more each than on the UK double, which means fewer knocked elbows and less creeping towards the edge.
- Fewer disturbed mornings: Individually pocketed springs respond separately, so when one of you gets up hours before dawn, the other should feel a good deal less of it.
- Length for taller partners: At 200cm long, the UK king adds 10cm over the UK double, a real relief for anyone approaching 6ft whose feet reach the end.
- Steadier temperature for two: Two bodies give off more warmth than one, and the natural wool layer helps keep the sleep surface feeling steadier across the full 150cm width.
- A realistic fit for most main bedrooms: We suggest at least 2.7m x 2.9m for the UK king, a slightly easier ask than the 3m x 2.9m we suggest for the UK super king.
This size suits you if...
You share the bed every night and feel cramped on a UK double, one of you leaves for work hours before the other and you want quieter mornings, or one of you is nearly 6ft and fed up with feet hanging over the end.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m, or you usually sleep alone. We'd recommend the UK double instead, for which we suggest at least 2.6m x 2.8m.
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FAQ's
Is the Spring King Wool Luxury Pocket Mattress in a UK king big enough for two adults?
For most couples, yes. The UK king gives you 75cm each, against 67.5cm each on the UK double. If you both sprawl or share with a dog, the UK super king gives 90cm each, so the UK king offers 15cm less each than that.
Will I feel my partner move on a UK king Spring King Wool Luxury Pocket Mattress?
Less than on a narrower bed. The pocketed springs work independently, which cuts down how far movement travels, and the UK king adds space between you, with 75cm each. Light sleepers sharing with a restless partner may still notice a little, but early starts should be far less disruptive.
Is the Spring King Wool Luxury Pocket UK king long enough for a tall person?
It measures 200cm, or 6ft 6in, which is 10cm longer than the UK double. That extra length suits anyone approaching 6ft. The UK super king is the same length, so sizing up to the UK super king gives you more width but no more length.
Should I choose the UK king or UK super king Spring King Wool Luxury Pocket Mattress?
Choose the UK king if your room is at least 2.7m x 2.9m and 75cm each feels enough. The UK super king gives 90cm each but needs more floor, and we suggest at least 3m x 2.9m for the UK super king. In a tighter main bedroom, the UK king is the safer choice.
Will a UK king Spring King Wool Luxury Pocket fit in a new build master bedroom?
Often, but measure after the wardrobes and drawers are in, because new build rooms can shrink quickly once furnished. We suggest at least 2.7m x 2.9m, with 3.2m x 3.2m feeling comfortable. Leave space to walk round both sides so neither of you has to climb over the other.