Jay-Be Ryze Deep Quilted Sprung e-pocket Mattress in a Box
Mattress
Jay-Be Ryze Deep Quilted Sprung e-pocket Mattress in a Box
Size
Firmness
Construction
Depth (cm)
21
Layers
3
Layer Details
- Cover/Fabric. A deep-quilted knitted fabric that's OEKO-TEX certified, which means it has been tested and shown to be free from harmful chemicals. The quilting adds a soft, cushioned surface feel from the moment you lie down.
- Comfort Layer. Extra-soft Advance e-Fibre with an open-cell structure that encourages airflow and helps moisture evaporate, so heat is less likely to build up around you. It's made from recycled PET bottles, with a minimum of 70% recycled content.
- Support Core. A deep sprung core that provides evenly distributed support across the mattress. Springs respond to pressure more quickly than foam, giving a slightly bouncier, more traditional feel.
Layer details from jaybe.com product page, September 2026.
- Real stretching room for one: At 120cm wide it's 30cm wider than a UK single, which means a solo sleeper can roll over and starfish without an arm hanging off the edge.
- Fits rooms a double crowds: It's 15cm narrower than a UK double, often the difference between a door that clears the bed and one that doesn't in a box room or studio.
- Cool sleeping in a snug space: Compact rooms hold heat, and the foam-free Advance e-Fibre comfort layer encourages airflow, so a warm small bedroom feels less clammy overnight.
- Copes with the occasional shared night: Its sprung core spreads support evenly across the full 120cm, so a couple staying for a weekend won't roll into a dip in the middle.
- Easy to kit out: The 4ft small double is a standard UK size, which means fitted sheets and frames are simple to find, and a standard double duvet works on top.
This size suits you if...
You're a solo adult who has outgrown a single and wants space to spread out, your bedroom, loft conversion or studio can't take a 4ft 6in bed without losing walking room, or you're furnishing a guest room where couples stay occasionally rather than nightly. It also suits a teenager moving up from a single in a room that can't spare the extra floor space a UK double demands.
Consider another size if...
You share the bed every night and the room can take a wider frame. The UK double is 15cm wider at the same length, and we suggest allowing at least 2.6m x 2.8m for it.
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Is the Jay-Be Ryze small double big enough for a couple?
For occasional nights, yes. The 120cm width gives two people less personal space than a UK double, so it works best in a guest room where couples stay now and then. The sprung core keeps support even edge to edge, but couples sharing every night would be more comfortable sizing up to the UK double.
Will the Jay-Be Ryze small double fit in a box room?
Usually, and that's a large part of its appeal. We suggest a room of at least 2.4m x 2.8m so you can still walk around the bed and open drawers. Being 15cm narrower than a UK double, it often clears doors and fits alcoves that a standard double would block.
What are the dimensions of the Jay-Be Ryze small double?
It measures 120 x 190cm, which is 4ft x 6ft 3in. That's the same length as a UK single but 30cm wider, so it suits any adult a single fits lengthways while adding real width. Check it against your frame before buying, as 4ft frames are sold separately from doubles.
Should I get the Jay-Be Ryze in a small double or a double?
It comes down to your room. The UK small double is 15cm narrower than the UK double at the same length, and we suggest at least 2.6m x 2.8m for the UK double. Sleeping alone in a compact room, take the small double. Sharing regularly with the space to spare, take the UK double.
Is the small double a good upgrade from a single for a teenager?
It's a sensible step. The UK small double is 30cm wider than a UK single and exactly the same length, so a growing teenager gains genuine rolling room without the bed swallowing the floor space a UK double would. The foam-free build also helps in small bedrooms that run warm overnight.