Vispring Realm Bedstead King Size Mattress
The Vispring Realm Bedstead Mattress is a handmade pocket spring mattress built around 1,326 hand-nested vanadium steel pocket springs in a calico construction, layered with British fleece wool, cotton and bamboo.
- Wool, cotton & bamboo breathe well
- Minimises partner disturbance
- Choose from four tensions
£2,659
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Vispring Realm Bedstead Mattress
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Mattress details
Mattress
Vispring Realm Bedstead Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Wool
Natural
Depth (cm)
21
Layers
5
Layer Details
Upholstery - Top layer
Bonded British fleece wool and cotton sit directly beneath you. Wool breathes and wicks moisture, which means a cooler, drier feel through the night than foam typically gives.
Upholstery - Middle layer
A layer of British fleece wool adds soft, natural cushioning. It helps regulate temperature while giving a little give before you reach the springs.
Upholstery - Layer
Bamboo brings a naturally breathable, moisture-managing quality to the fillings. It works alongside the wool to keep the sleep surface fresh.
Upholstery - Bottom layer
Layered British fleece wool and cotton cushion the transition to the spring unit. This means you feel the support of the springs without any harshness.
Spring system
A hand-nested calico pocket spring construction with 1,326 vanadium steel springs arranged in a single layer. Each spring moves independently, which means support that follows your shape and less disturbance from a partner shifting position.
Layer details from vispring.com product page, September 2026.
Key benefits
- Room to spread out: At 75cm per person, the UK king gives you 7.5cm more each than the UK double, enough to lie on your back without brushing a shoulder.
- Quieter early starts: Independent pocket springs plus the added width mean the partner who gets up first is a little less likely to wake the one still sleeping.
- Length for taller sleepers: The UK king is 10cm longer than the UK double, which means a tall partner's feet stay on the mattress instead of hanging off the end.
- A more forgiving footprint: We suggest at least 2.7m x 2.9m for the UK king, slightly less floor than the 3m x 2.9m we'd allow for the UK super king.
- Neat on a bedstead: At 21cm deep plus around 6cm of doming, the UK king sits in proportion on a bedstead frame rather than looming over it.
This size suits you if...
You share the bed every night and keep waking when your partner shifts, or one of you is tall enough that a UK double leaves your feet at the edge. It also suits couples on different working hours who want the first one up to slip out quietly.
Consider another size if...
Your bedroom measures under our suggested 2.7m x 2.9m once wardrobes are in. 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 a Vispring UK king long enough if you're over 6ft?
The UK king measures 200cm long, or 6ft 6in. That's 10cm longer than the UK double, and the same length as the UK super king, so sizing up further won't gain you any extra length. For most tall sleepers, the UK king is where the length upgrade happens.
How much extra space per person do you get on a Vispring UK king?
Two people sharing get 75cm each. On the UK double you'd have 67.5cm each, so the UK king gives you 7.5cm more per person. That sounds small on paper, but it's the difference between lying flat comfortably and sleeping slightly turned away from your partner.
Will I feel my partner move on a Vispring UK king?
The 1,326 springs sit in individual calico pockets and respond separately, which means movement travels less across the surface. On a UK king you also have 15cm more total width than a UK double, so there's more distance between you. Light sleepers should find both help.
Does a Vispring king size fit a new build master bedroom?
Measure after wardrobes and bedside tables are in, as new build rooms often shrink once furnished. We suggest at least 2.7m x 2.9m for a UK king. If your space falls short, the UK double is the safer choice, and we suggest at least 2.6m x 2.8m for that.
Should we choose a UK king or UK super king in this Vispring?
The UK super king gives 90cm each, so the UK king gives you 15cm less per person. Both are 200cm long. Choose the UK super king if you want maximum separation and have at least 3m x 2.9m; otherwise the UK king suits most couples well.