Vispring Imperial Bedstead King Size Mattress
The Vispring Imperial is a hand-nested pocket spring mattress built for bedsteads, filled with British fleece wool, cotton, bamboo and horsehair.
- Breathable wool, cotton & bamboo top
- Minimises partner disturbance
- Horsehair helps it hold its shape
£4,899
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Vispring Imperial Bedstead Mattress
More available sizes
Mattress details
Mattress
Vispring Imperial Bedstead Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
21
Layers
4
Layer Details
Top upholstery
Layered British fleece wool and cotton with bamboo, which gives exceptional softness directly beneath you. These natural fibres are highly breathable, so the surface stays temperate rather than trapping heat.
Support layer
Horsehair, a traditional filling prized for durability and resilience. It acts as a natural spring beneath the softer top layers, helping the mattress keep its shape over time.
Spring layer
Hand-nested calico pocket springs made from vanadium steel, with 1,720 springs in the 150 x 200cm size. It's a single layer of springs that move independently, which means support adapts to your body and you feel less of your partner's movement.
Base upholstery
Bonded British fleece wool and cotton with a built-in wool pad. This safeguards the mattress against wear from beneath, protecting the fillings where they meet the bedstead.
Layer details from vispring.com product page, September 2026.
Key benefits
- More room for each of you: At 75cm per person, the UK king gives you 7.5cm more each than a UK double, which means fewer elbows and less negotiating over the middle.
- Quieter nights on split schedules: The springs are sewn into individual calico pockets, which means one of you turning over or getting up at dawn sends less movement across to the other side.
- Length for taller sleepers: At 200cm long, the UK king adds 10cm over a UK double, so anyone around six foot can stretch out without their feet meeting the end.
- Spring count set for this size: Vispring specifies 1,720 vanadium steel pocket springs for the 150 x 200cm mattress, spreading support across the full width you share.
- A sensible middle ground: You get real personal space without the 3m x 2.9m floor area we suggest for a UK super king.
This size suits you if...
You share the bed every night and a UK double has started to feel cramped, one of you is over six foot and keeps running out of length, or you keep different hours and want the partner who's still asleep to feel less of the other getting up.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m, or you mostly sleep alone. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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FAQ's
How many springs are in the Vispring Imperial UK king?
Vispring specifies 1,720 hand-nested vanadium steel pocket springs for the 150 x 200cm size, which is the UK king. Spring counts vary with the size of the mattress, so if you're weighing this against a UK double or UK super king, check Vispring's own figure for that size before you compare.
Is the Vispring Imperial UK king long enough if you're over six foot?
It's the more comfortable choice for taller sleepers. The UK king is 200cm long, or 6ft 6in, which is 10cm longer than a UK double. For a partner over six foot, that extra length often matters more than the extra width, because it leaves room for a pillow at the top without your feet pressing the end.
Will I feel my partner moving on a Vispring Imperial king size?
A little less than on a smaller size. The pocket springs move independently, so movement stays fairly local to the person making it, and the UK king gives you 75cm each rather than 67.5cm on a UK double. That extra gap helps if one of you gets up for work hours before the other.
Vispring Imperial UK king or UK super king for a couple?
The UK king gives you 75cm each, 15cm less each than the 90cm on a UK super king. The two are the same length. We suggest at least 2.7m x 2.9m for a UK king against 3m x 2.9m for a UK super king, so in a new build master bedroom with fitted wardrobes, the UK king is often the realistic fit.
What size bedstead does a Vispring Imperial UK king need?
Look for a bedstead made for a UK king, 150 x 200cm or 5ft x 6ft 6in, and measure the inside of the frame rather than relying on the label. The Imperial is 21cm deep with around 6cm of doming, so check that your headboard still sits comfortably above the mattress.