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.
- Leaves room for everything else: At 90cm wide, the UK single sits against one wall and leaves space for a desk, wardrobe and clear floor in a small child's or teen's bedroom.
- Made for the frames singles usually sit on: It is designed for bedstead bases, which means it suits the slatted metal and wooden single frames common in children's rooms and guest rooms.
- Two beds for guests: A pair of UK singles lets two visitors who don't share a bed each have their own firm, even surface with 1,326 hand-nested springs apiece.
- Steady support for a growing frame: The firm tension keeps the spine level for older children and teens who sleep on their backs or fronts, with natural wool and cotton on top.
- Breathable in a small, warm room: British fleece wool and a bamboo layer help moisture escape, which suits a compact bedroom where warmth builds up overnight.
This size suits you if...
You sleep alone and want a firm, natural-fill mattress in a compact bedroom, you are furnishing a teenager's room where the bed has to share space with a desk and storage, or you are setting up a guest room with two separate beds.
Consider another size if...
Your child is a lightweight side sleeper, or you are an adult who spreads out at night. For more room, we'd recommend the UK double instead, which is 45cm wider; we suggest at least 2.6m x 2.8m.
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Is the Vispring UK single too deep for a bunk bed or mid sleeper?
It could be. The mattress is 21cm deep plus around 6cm of doming from the natural fillings, and raised frames often cap mattress depth so the guard rail stays effective. Check your bunk or mid sleeper's maximum mattress depth before ordering. A standard single bedstead is the more natural home for this mattress.
Is a firm UK single mattress suitable for a child?
It depends on how your child sleeps. Older children and teens who sleep on their backs or fronts should find the firm support comfortable. Lighter children who curl up on their side may feel a little too much pressure at the hips and shoulders, so a softer tension would likely suit them better.
Is a UK single wide enough for an adult sleeping alone?
At 90cm wide, the UK single suits an adult who sleeps fairly still. If you sprawl, turn often or simply like extra space, the UK double is 45cm wider and the same length, although it needs a larger room: we suggest at least 2.6m x 2.8m for the UK double.
Is a UK single long enough for a tall teenager?
The UK single is 190cm long, the same length as the UK double. If your teenager is already close to that height, the UK king is 10cm longer than the UK single, but it needs far more floor space: we suggest at least 2.7m x 2.9m for the UK king.
Should I choose two UK singles or one UK double for a guest room?
Two UK singles suit friends, siblings or relatives who won't share a bed, and each guest gets 90cm of their own. A UK double gives 67.5cm each for two sharing, so it works better for visiting couples. Pick based on who stays most often.