Jay-Be Ryze Sprung Quilted e-pocket 800 Mattress in a Box
Mattress
Jay-Be Ryze Sprung Quilted e-pocket 800 Mattress in a Box
Size
Firmness
Construction
Depth (cm)
23
Layers
4
Layer Details
- Advance e-Fibre™. An extra-soft, deep-quilted top layer of Advance e-Fibre, which means a luxurious surface feel the moment you lie down. It also wicks moisture away to help keep the mattress fresh and regulate temperature.
- Breathable comfort layers. Open-cell comfort layers let air circulate freely through the mattress. In practice that means a fresher, more ambient sleep environment rather than trapped heat.
- 3D Mesh ventilated border. The border itself is made from ventilated 3D mesh, which gives warm air an escape route around the sides. It's a small detail that adds to the mattress's overall breathability.
- Deep Pocket Sprung core. 800 individual pocket springs adapt to your body's contours for tailored support. Because each spring moves independently, motion transfer is reduced, so you're less likely to be disturbed by a restless partner.
Layer details from jaybe.com product page, September 2026.
- Real space for one: At 120cm across, a solo sleeper gets room to sprawl, change position and starfish without a foot hanging over the edge.
- Fits rooms a double overwhelms: We suggest a minimum room of 2.4m x 2.8m, which means box rooms, studio flats and loft conversions stay usable around the bed.
- Cool sleeping in a small room: Smaller bedrooms can run warm, and the foam-free build with its ventilated 3D mesh border gives heat routes out rather than trapping it around you.
- 800 springs across a 4ft width: Each pocket spring moves independently, which means the mattress follows your shape wherever you settle on the surface rather than supporting only the centre.
- Arrives rolled, a help upstairs: It comes vacuum packed in a box, so getting a 4ft mattress up a narrow staircase or into a loft room is far easier than manhandling a flat one.
This size suits you if...
You're a solo adult who has outgrown a single and wants room to spread out, your bedroom is compact enough that the 15cm saved against a UK double keeps a walkway clear, or you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly.
Consider another size if...
You share the bed every night and the room can take more width. The UK small double is 15cm narrower than the UK double, so we'd recommend the UK double instead; allow at least 2.6m x 2.8m for it.
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Is a small double Jay-Be Ryze big enough for a couple?
For occasional nights, yes. Across a 120cm width the 800 pocket springs move independently, so a restless guest disturbs their partner less than you might expect. For every-night sharing, though, 4ft is snug for two adults, and the UK double's extra 15cm makes a real difference.
What room size do I need for the small double Ryze?
We suggest at least 2.4m x 2.8m. That allows space to walk round the bed and open a wardrobe, which is exactly why this size gets chosen: it puts a proper adult bed into a box room or studio where a standard double would block the door.
How big is the Jay-Be Ryze in a small double?
It measures 120 x 190cm, or 4ft x 6ft 3in, with a depth of 23cm. That slimmer profile is modest next to tall hotel-style mattresses, but in a compact room it keeps the bed from dominating visually, and standard 4ft fitted sheets are easy to find.
Is a small double worth it over a single for one person?
Usually, yes. The UK small double is 30cm wider than the UK single and the same length, so a teenager or adult who has outgrown a single gains a third more width without the room losing any floor length. If space is very tight, the UK single still fits a 2.1m x 2.8m room.
Will the small double Ryze fit up a narrow staircase?
It should be one of the easier 4ft mattresses to move. It arrives vacuum packed and rolled in a box, which suits loft conversions and upstairs flats where carrying a rigid 120cm-wide mattress round a tight landing would be a struggle. Give it time to expand once unrolled.