SleepSoul Nebula Orthopaedic Pocket 600 Mattress in a Box
Mattress
SleepSoul Nebula Orthopaedic Pocket 600 Mattress in a Box
Size
Firmness
Construction
Depth (cm)
22
Layers
4
Layer Details
- Top Layer. A layer of comfort quilting on the surface, which gives the firm mattress a slightly softer initial feel. It is what your skin actually touches, so it shapes that first impression when you lie down.
- Soft Foam. 1.5cm of soft foam sits beneath the quilting, providing deep comfort through consistent weight distribution. It is a thin layer, so expect cushioning rather than a plush, sink-in feel.
- Springs. 600 pocket springs conform to your body's shape, supporting you where you need it most. Because each spring is sewn into its own fabric pocket, SleepSoul says they help prevent the roll-together effect where couples drift into the middle.
- Non Slip Fabric. An anti-slip base for additional stability, which means the mattress is less likely to shift around on slats or a divan. A simple feature, but useful in practice.
Layer details from sleepsoul.co.uk product page, September 2026.
- Room to share without filling the room: At 135 x 190cm, the UK double fits within our suggested minimum of 2.6m x 2.8m, so your wardrobe and chest of drawers can usually stay where they are.
- Less drifting into the middle: Each of you gets 67.5cm, and the 600 springs sit in separate pockets, which means a partner turning over is less likely to tip you towards them.
- Firm support for two: The firm feel tends to suit couples who both sleep on their backs or fronts, although a lighter side sleeper may find the slim 1.5cm foam layer slightly unforgiving.
- Kind to a stretched budget: If you're furnishing a whole home at once, this mattress keeps the cost of a shared bed down and leaves more money for the sofa and kitchen.
- Simple to dress: Standard double fitted sheets suit the 135 x 190cm surface, and a 200 x 200cm duvet covers two people comfortably.
This size suits you if...
You share the bed every night and your bedroom is a typical UK room rather than a large master suite, or you're setting up a guest room for visiting couples and want firm, uncomplicated support without spending much.
Consider another size if...
You're both restless sleepers, or one of you is tall and wants extra length. We'd recommend the UK king instead, which we suggest for rooms of at least 2.7m x 2.9m.
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How much space per person does the SleepSoul Nebula UK double give?
Two people sharing get 67.5cm each. That is a snug fit for couples who both spread out, but the pocket springs help, because each one moves independently. That means you're less likely to feel your partner shift or find yourselves rolling together in the night, a common complaint with cheaper open-coil doubles.
How much smaller is the SleepSoul Nebula UK double than the UK king?
The UK double is 15cm narrower and 10cm shorter than the UK king, and gives each sleeper 7.5cm less width. If you're both tall or restless, the UK king is the more comfortable choice, but we suggest at least 2.7m x 2.9m for it, so measure your bedroom first.
Will a UK double SleepSoul Nebula fit a small bedroom with bedside tables?
We suggest a room of at least 2.6m x 2.8m for a UK double. At that size the bed fits, but space either side is tight. If you want a bedside table on both sides and room to walk round, around 3m x 3m is the more comfortable norm.
What are the SleepSoul Nebula UK double dimensions in feet?
The UK double measures 4ft 6in x 6ft 3in, or 135 x 190cm. It is the standard UK double footprint, so it should suit any bed frame, divan or headboard sold as a UK double. The non-slip base also helps keep the mattress in place on slats.
Is the SleepSoul Nebula UK double a good choice for a guest room?
For a guest room that hosts visiting couples, yes. The UK double gives two people room to share and keeps costs down. The feel is firm, which suits most back and front sleepers, although guests who sleep lightly on their side may find it a little hard at the hips and shoulders.