Relyon Chelsea 1500 Memory Mattress
Mattress
Relyon Chelsea 1500 Memory Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
27
Layers
3
Layer Details
- Knitted Cover. A soft knitted cover that's breathable, which means heat can escape rather than building up. That helps keep you at a more even temperature through the night.
- Memory Foam. Memory foam, originally developed by NASA, moulds to your body as it warms. You'll feel a gentle, contouring hug that supports your spine and eases pressure points.
- 1500 Pocket Springs. Each of the 1500 springs sits in its own fabric pocket, so they respond independently to your body. That means more targeted pressure relief and less disturbance from a partner's movement.
Layer details from mattressnextday.co.uk product page, September 2026.
- Fits compact rooms: At 90cm wide, it leaves room for a desk, wardrobe or toy storage in a child's bedroom where every bit of floor matters.
- Grown-up support for growing sleepers: The 1500 pocket springs respond to a light teenage frame as readily as an adult one, which means proper spinal support through the growth years.
- A guest bed that feels considered: Memory foam over springs gives visitors pressure relief on hips and shoulders, so a spare room that doubles as an office still sleeps well.
- Easy, cheap bedding: Single fitted sheets and duvets are the most widely stocked of any size, and the 27cm depth suits most standard fitted sheets.
- Check raised frames first: On bunks, cabins and mid sleepers, that 27cm depth can sit high against a guard rail, so measure the rail height before ordering.
This size suits you if...
You're buying for a child's or teenager's room where the bed shares space with a desk and storage, you sleep alone and want a branded hybrid without giving up floor space, or you're kitting out a spare room or student flat where the frame is already a standard UK single. It also works where two beds need to fit in one room with a walkway between them.
Consider another size if...
You're an adult who shares the bed, or a restless solo sleeper who wants space to spread out. We'd recommend the UK double instead: it's 45cm wider, the same length, and needs a room of at least 2.6m x 2.8m.
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What size is the Relyon Chelsea 1500 in a UK single?
The UK single measures 90 x 190cm, which is 3ft x 6ft 3in. That's the standard one-person size, so it fits standard single frames, single fitted sheets and a 135 x 200cm single duvet without any adjustment.
Will the Relyon Chelsea 1500 UK single fit a bunk or mid-sleeper frame?
The 90 x 190cm footprint matches standard UK bunk and mid-sleeper frames. The thing to check is depth: at 27cm this is deeper than many mattresses sold for raised beds, so measure your frame's guard rail height first. A rail that sits too low against a deep mattress is a safety issue on a top bunk.
How much floor space does a UK single need?
We suggest allowing at least 2.1m x 2.8m, which gives you room to walk alongside the bed and open drawers or a wardrobe. In a child's room competing with a desk and toy storage, or under the slope of a loft conversion, the single's 90cm width is the easiest size to work around.
Is the Relyon Chelsea 1500 UK single big enough for an adult?
For one adult, yes: 90 x 190cm is the standard solo size, and the 1500 pocket springs with memory foam give full adult-level support. Taller sleepers should note the 190cm length. If you're over about 6ft, sizing up to the UK king adds 10cm of length as well as width.
Is a single a good choice for a spare room?
It's a practical one. A UK single leaves floor space free in a spare room that also serves as an office, and two singles can share a room where one larger bed wouldn't. Guests get memory foam pressure relief over pocket springs, which is a step up from most budget guest mattresses. Compare the retailers listed on this page for current prices.