Bodyshape Boost 800 Pocket Memory King Size 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
£265
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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
- More room each without a super king: Each of you gets 75cm, which is 7.5cm more than a UK double gives, enough to stop elbows meeting when one of you turns over.
- Length for a partner over six foot: At 200cm long, the UK king adds 10cm over the UK double, so a tall sleeper can stretch out without their feet hanging off the end.
- Less disturbance on different schedules: Individually pocketed springs move separately, which means an early riser getting up at dawn should send less movement across to the partner still asleep.
- Room to prop and shift: During pregnancy or recovery, the extra width leaves space for a wedge or a stack of pillows on one side without squeezing the other sleeper out.
- Firmer edges for getting in and out: The outer rows of springs are firmer, which reduces that roll-off feeling when you sit on the side, useful if you're easing out of bed carefully.
This size suits you if...
You share the bed every night and keep waking each other, one of you is pushing six foot and has outgrown a 190cm double, or you both sleep on your side and want a soft, cushioned surface with a bit more breathing room.
Consider another size if...
Your bedroom is smaller than 2.7m x 2.9m once wardrobes are in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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FAQ's
Is the Bodyshape Boost 800 UK king big enough for two people?
For most couples, yes. The UK king gives 75cm each, which is 7.5cm more per person than the UK double. If one of you sprawls, or a dog regularly claims the middle, the UK super king gives 90cm each, though it needs a room of at least 3m x 2.9m.
What room size do I need for a Bodyshape Boost 800 king size mattress?
We suggest at least 2.7m x 2.9m for a UK king, with 3.2m x 3.2m being comfortable. New build master bedrooms can feel smaller than the floor plan suggests once fitted wardrobes go in, so measure from the wardrobe doors rather than the wall.
Is a UK king long enough for someone over 6ft?
It's 200cm long, which is 10cm longer than the UK double and the UK small double. For a partner around six foot or a little over, that extra length is often the reason to upgrade, more so than the width.
Will I feel my partner move on the Bodyshape Boost 800 in king size?
The pocket springs and memory foam both help limit movement crossing the bed, and the 75cm each in a UK king puts a little more distance between you than a double does. If one of you leaves hours before the other, that combination should mean fewer wake-ups.
Bodyshape Boost 800 king or super king for a couple?
The UK super king is 30cm wider and the same length, giving 15cm more each. Choose it if you have the room and want real separation. The UK king suits couples who want more space than a double but whose bedroom can't take a super king's footprint.