SleepSoul Space 3000 Super King Mattress
The SleepSoul Space 3000 is a medium-feel pocket spring mattress with a cashmere knitted top and a 36cm depth.
- Eases pressure at hips & shoulders
- Soft, breathable cashmere-knit cover
- 10-year guarantee
£615
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SleepSoul Space 3000 Mattress
More available sizes
Mattress details
Mattress
SleepSoul Space 3000 Mattress
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Memory Foam
Depth (cm)
36
Layers
5
Layer Details
Top Layer
A cashmere knitted fabric that feels soft and slightly plush the moment you lie down. It's breathable too, which helps stop heat building up at the surface.
Memory Foam
3cm of memory foam that moulds to your shape, which means pressure points like hips and shoulders get gentle relief. It's a modest layer, so you get contouring without the stuck-in-the-mattress feeling deeper memory foam can create.
High-Density Foam
A 3cm layer of high-density foam that responds as you move. This makes changing position easier than on all-memory-foam designs.
Soft Foam
2cm of softer foam adds a touch of extra cushioning between you and the springs. It's there to keep the medium feel from tipping into firmness.
Springs
1000 pocket springs work alongside 2000 mini springs, giving targeted support across the whole mattress. Because each spring moves independently, your partner's movement is less likely to travel across the bed.
Layer details from sleepsoul.co.uk product page, September 2026.
Key benefits
- Distance from a restless partner: With 90cm each, a partner who tosses and turns has more distance to cover before you feel it, and independent pocket springs dampen much of what reaches you.
- A real step up from the UK king: The UK super king is 30cm wider than the UK king at the same length, giving each of you 15cm more, enough to stop elbows meeting overnight.
- Room when little ones climb in: When a child arrives after a bad dream, 180cm of width lets two adults keep their own sides rather than clinging to the edges until morning.
- In proportion in a large bedroom: In a period property or a generous master bedroom, a UK super king fills the space properly, where a UK king can look a little lost.
- Length for taller sleepers: At 200cm long, 10cm longer than the UK double, the UK super king gives taller sleepers room to stretch out without their feet reaching the end.
This size suits you if...
You share the bed with a partner who moves a lot, children or a large dog regularly join you overnight, or your bedroom is large enough that a UK king would look undersized.
Consider another size if...
Your bedroom is under our suggested 3m x 2.9m, or your landing and doorways are tight. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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FAQ's
Is the SleepSoul Space 3000 super king big enough for two adults and a child?
For occasional visits, yes. The UK super king gives two adults 90cm each, which is 22.5cm more each than the UK double, so a small child tucked in the middle for part of the night rarely pushes anyone to the edge. If a child sleeps with you most nights, the extra width matters more than any comfort layer.
SleepSoul Space 3000 super king or king: how much extra space do you get?
The UK super king is 30cm wider than the UK king and the same length. Shared between two, that is 15cm more each: 90cm on the UK super king against 75cm on the UK king. Room needs rise too, so we suggest at least 3m x 2.9m for the UK super king and 2.7m x 2.9m for the UK king.
Will a SleepSoul Space 3000 super king fit in a loft conversion bedroom?
It can, but the sloping ceiling usually decides where it goes. Put the head of the bed against the full-height wall so you can sit up comfortably, then check you still have at least 3m x 2.9m of usable floor, our suggested minimum. If the slope eats into that, the UK king is the more comfortable fit for the room.
Is the SleepSoul Space 3000 super king good if your partner is restless?
It is the most forgiving size in the range for it. Distance does more than any foam layer, and the UK super king gives you 90cm each. The 1000 pocket springs move independently, so the movement that does reach you is dampened, although on a UK double the same springs have far less space to work with.
Can a large dog sleep on a SleepSoul Space 3000 super king with two people?
At 180 x 200cm, the UK super king is the most realistic size in the range for a big dog as a nightly habit, since two adults start with 90cm each before the dog is counted. Expect the dog to claim some of that share. A throw at the foot of the bed will help protect the cashmere knitted cover.