Vispring Bedstead Realm Firm Mattress
Mattress
Vispring Bedstead Realm Firm Mattress
Size
Firmness
Firm
Construction
Depth (cm)
21
Layers
5
Layer Details
- Bonded British fleece wool and cotton. A bonded layer of British fleece wool and cotton sits at the top. Bonding keeps the fillings in place, which means the surface stays smoother for longer.
- British fleece wool. A layer of pure British fleece wool. Wool breathes and wicks moisture, so the sleeping surface feels drier through the night.
- Bamboo. A bamboo layer chosen for its temperature-regulating and hypoallergenic properties. A sensible inclusion if you sleep hot or have sensitive skin.
- Layered British fleece wool and cotton. Further layered wool and cotton cushioning between you and the springs. This softens the transition onto the firm spring unit slightly, without undermining the overall firm feel.
- Hand-nested calico pocket springs. 1,326 vanadium steel pocket springs, each in its own calico pocket and hand-nested in a single layer. Hand-nesting means the springs are stitched to one another, giving stable, independent support across the whole surface.
Layer details from vispring.com product page, September 2026.
- 90cm each for two: Two people sharing get 90cm each, which means you can turn over or sprawl a little without meeting your partner halfway across the mattress.
- Distance plus independent springs: The extra width keeps you physically apart, and the individually pocketed springs help keep a partner's movement on their own side rather than rolling it across to yours.
- Space for a small visitor: When a child climbs in during the night, the UK super king leaves the adults a usable strip each instead of a thin edge to cling to.
- Firm enough for a dog: A large dog curled at the foot sits on steady, even support, so the dog's weight is less likely to drag the sleeping surface towards it.
- In proportion in a big room: In a large master bedroom or a high-ceilinged period room, a 6ft wide bedstead fills the wall in a way a narrower bed can struggle to.
This size suits you if...
You share with a partner who tosses and turns and you want real distance between you, or children and pets regularly end up in the bed, and your bedroom comfortably clears our suggested minimum of 3m x 2.9m.
Consider another size if...
Your room falls short of 3m x 2.9m, or you mostly sleep alone. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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Is the Vispring Bedstead Realm Firm super king big enough for two adults and a child?
For occasional night-time visits, yes. The UK super king gives two adults 90cm each before a child arrives, so a small body in the middle still leaves each adult a workable strip. If a child sleeps in every night, all three of you will feel the squeeze a little, although less than on any smaller size of this mattress.
How much bigger is the Vispring Bedstead Realm Firm super king than the king?
The UK super king is 30cm wider than the UK king, and the two are the same length at 200cm. For two people sharing, that works out at 15cm more each: the UK king gives 75cm per person, while the UK super king gives 90cm.
Will a Vispring super king fit a loft conversion bedroom?
Allow at least 3m x 2.9m of floor space for the UK super king, and measure where the ceiling is tall enough to stand. In a loft conversion the sloping roof usually decides the placement, so the headboard end of the bedstead often has to go under the slope. Check you can still get in and out comfortably on both sides.
Is a Vispring Bedstead Realm Firm super king good for a restless partner?
It is the strongest option in this range. The UK super king puts 90cm between each sleeper's share, and the hand-nested pocket springs move independently, so a partner turning over is felt less on your side. The firm feel won't suit everyone, though: lightweight side sleepers may find it a little hard on hips and shoulders.
Does a super king Vispring bedstead mattress suit a period bedroom?
In a large period room it often looks better than a UK king, which can seem undersized under a high ceiling. At 6ft x 6ft 6in, the UK super king fills a bedstead frame properly, and the mattress's slim profile (21cm plus around 6cm of doming) keeps a traditional frame on show.