Bodyshape Boost 800 Pocket Memory Small Double Mattress
The Bodyshape Boost 800 Pocket Memory Mattress combines a memory foam comfort layer with 800 pocket springs, which means you get a cushioned, sink-in surface with a supportive core underneath.
- Cushioned sink-in feel
- Firmer edges reduce roll-off
- Breathable fibres help dispel heat
£229
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Bodyshape Boost 800 Pocket Memory Mattress
More available sizes
Mattress details
Mattress
Bodyshape Boost 800 Pocket Memory Mattress
Size
Firmness
Medium Soft
Construction
Foam
Memory Foam
Pocket Spring
Rolled
Depth (cm)
25
Layers
4
Layer Details
Memory foam layer
A memory foam layer that adapts around your body. That gives you a sink-in, cushioned feel and helps ease pressure.
Reflex foam layer
A layer of Reflex foam that offers durable comfort. It adds resilience beneath the memory foam so the surface should keep its feel.
Soft white fibres layer
Soft white fibres that encourage open airflow. This helps dispel heat and moisture so you sleep more comfortably.
Pocket spring core
A core of 800 pocket springs, each in its own fabric pocket, with firmer springs on the outer rows. This gives supportive, responsive sleep and reduces the roll-off feeling at the edges.
Layer details from mattressonline.co.uk product page, November 2026.
Key benefits
- Room to sprawl on your own: At 30cm wider than the UK single, it lets a side sleeper draw up a knee or turn over freely, while the memory foam cushions shoulders and hips.
- More usable width: The 800 pocket springs include firmer springs on the outer rows, which means you can lie closer to the side of a 120cm bed without feeling you might roll off.
- Kinder to small rooms: Being 15cm narrower than the UK double, it leaves a little more floor beside the bed in a box room, so the door and a bedside table are likelier to clear.
- Same length as a UK double: The UK small double matches the UK double for length, so moving down a size costs you width but no legroom at all.
- Easy to dress: Fitted sheets sold as small double (4ft) are made for this size, and a standard double duvet covers it, so setting up a guest room is simple.
This size suits you if...
You sleep alone, like a soft, cushioned feel and want space to stretch out, or you're furnishing a guest room or loft conversion where couples stay only now and then and a UK double would leave no room to walk round.
Consider another size if...
Two of you will share the bed every night and want space of your own. We'd recommend the UK double instead; we suggest at least 2.6m x 2.8m for the UK double.
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FAQ's
Is the Bodyshape Boost 800 small double big enough for two people?
For occasional stays, yes. As a nightly bed for two adults it's tight, and the soft memory foam gives each of you a sink-in feel rather than lots of spare space. If you'll share every night, the UK double gives 67.5cm each and is the size we'd point you towards.
What size bedroom do I need for a UK small double Bodyshape Boost 800?
We suggest at least 2.4m x 2.8m. In a box room, measure where the door swings as well as the floor, because the bed's width often decides whether the door still opens fully. A UK double needs more, at least 2.6m x 2.8m by our guidance.
Should a teenager get a UK small double or UK double Boost 800?
If their room is short on floor space, the UK small double is usually the better fit. It's 30cm wider than the UK single they've outgrown, yet 15cm narrower than the UK double, so a desk or wardrobe still has room. The medium soft feel suits lighter teenagers who sleep on their side.
Will a UK small double Boost 800 fit a loft conversion?
Often, yes, because sloping ceilings leave little standing room beside a wider bed, and the UK small double gives you more of it. Check the full footprint of 4ft x 6ft 3in against your usable floor, measure the stairs first, then compare the retailers listed on this page.
What bedding fits a UK small double Boost 800 mattress?
Look for small double (4ft) fitted sheets, since a UK double sheet will sit loose and wrinkle. The mattress is 25cm deep, so choose a fitted sheet whose pocket depth covers that. A standard double duvet sits comfortably on top and gives a little overhang at the sides.