Bodyshape Boost 800 Pocket Small Double Mattress
The Bodyshape Boost 800 Pocket Mattress pairs 800 individually pocketed springs with a Reflex foam comfort layer, which means you get a medium feel with some cushioning on top and springs that move independently below.
- Medium feel for most sleepers
- Reflex foam cushioning on top
- Breathable knitted cover
£205
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Bodyshape Boost 800 Pocket Mattress
More available sizes
Mattress details
Mattress
Bodyshape Boost 800 Pocket Mattress
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Rolled
Depth (cm)
24
Layers
4
Layer Details
Microquilted comfort layer
A microquilted top filled with Reflex foam and cosy polyester fibres. It adds light cushioning over the springs, so the surface feels medium rather than hard.
Polyester fibre layer (above spring unit)
Dense polyester fibres sit above the spring unit. They add padding between you and the springs, so you feel the cushioning rather than the coils.
Pocket spring unit
800 individually pocketed springs, with the pockets secured together to form a single unit. Each spring works on its own, so the support follows your body.
Polyester fibre layer (below spring unit)
Dense polyester fibres sit below the spring unit. They form the underside of the mattress, between the springs and your bed base.
Layer details from mattressonline.co.uk product page, November 2026.
Key benefits
- Space to spread out on your own: It is 30cm wider than the UK single and the same length, so a solo sleeper can stretch out or turn over without meeting the edge.
- Fits where a UK double won't: Being 15cm narrower than the UK double can mean the door still swings open fully or a bedside table squeezes in beside the bed.
- A medium feel for one sleeper: The medium rating, with Reflex foam and polyester fibres over 800 pocket springs, suits most back and side sleepers of average build sleeping alone.
- Lower profile under a sloping ceiling: At 24cm deep it sits slimmer than many pocket spring mattresses, which leaves a little more headroom above the bed in a loft conversion.
- Straightforward bedding: You need small double fitted sheets for the mattress itself, and a standard double duvet works on top.
This size suits you if...
You sleep alone and want more width than a UK single gives you, your bedroom is at least 2.4m x 2.8m but too tight for a UK double, or you put up couples in a guest room now and then rather than every night.
Consider another size if...
Two of you share the bed every night and want room to move. We'd recommend the UK double instead, which gives 67.5cm each and needs at least 2.6m x 2.8m.
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FAQ's
What size room do I need for a UK small double Bodyshape Boost 800 Pocket?
We suggest allowing at least 2.4m x 2.8m for a UK small double. That leaves space to walk round the bed and open a wardrobe. If your room is smaller than that, the UK single needs at least 2.1m x 2.8m by our guidance.
Is a UK small double big enough for two adults?
For occasional stays, yes, which is why it suits guest rooms. For couples sharing nightly it is tight, and a slightly restless partner will be noticed. The UK double is 15cm wider at the same length and gives 67.5cm each for two sharing.
What sheets and duvet fit the Bodyshape Boost 800 Pocket small double?
Buy small double (4ft) fitted sheets so the corners grip the 120 x 190cm mattress properly. A standard double duvet works on top. The mattress is 24cm deep, so check the fitted sheet's pocket depth covers that.
Is a UK small double long enough if you're tall?
The UK small double is 190cm long, the same as the UK single and UK double. If your feet already reach the end of a standard bed, the UK king is 10cm longer, although it is also 30cm wider and we suggest at least 2.7m x 2.9m for it.
Is the Bodyshape Boost 800 Pocket small double a good choice for a teenager?
It suits a teenager who has outgrown a single, since it is 30cm wider at the same length. The medium feel works for most back and side sleepers of average build. Just check the room meets our suggested 2.4m x 2.8m before swapping the single out.