SleepSoul Comfort 800 Pocket King Size Mattress
The SleepSoul Comfort 800 is a hybrid mattress that pairs 800 individual pocket springs with a layer of Reflex foam, which means you get responsive support with a little contouring on top.
- Minimises partner disturbance
- Supportive medium-firm feel
- Hypoallergenic build
£189
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SleepSoul Comfort 800 Pocket Mattress
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Mattress details
Mattress
SleepSoul Comfort 800 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Depth (cm)
23
Layers
2
Layer Details
Reflex Foam
A 2cm layer of high-density Reflex foam sits at the top, adapting to your shape for enhanced support. It's a thin comfort layer, so expect a supportive feel rather than deep cushioning.
Pocket Springs
Beneath the foam are 800 individual pocket springs, each moving independently for pressure relief and personalised support. Because the springs respond separately, you're less likely to feel a partner shifting about.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Room to stop colliding: At 75cm each for two people sharing, the UK king gives you 7.5cm more personal space than the UK double, which is often enough to keep elbows and knees apart overnight.
- Kinder to split schedules: If one of you is up long before the other, the independent springs and wider surface together make that early exit a little less likely to wake whoever is still asleep.
- Length for taller partners: The UK king is 200cm long, 10cm more than the UK double, so a partner over six foot is less likely to find their feet reaching the end.
- Space away from the sides: Some owners mention feeling springs at the edges, and a UK king's extra width means neither of you needs to sleep right up against them.
- Standard king fit: At 5ft x 6ft 6in, the UK king suits standard UK king bed frames, so replacing an old king mattress should not mean buying a new base.
This size suits you if...
You share the bed every night and keep ending up in each other's space on a UK double, one of you is over six foot and wants the extra length, or an early alarm on one side tends to wake the other.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m once wardrobes and bedside tables 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 SleepSoul Comfort 800 UK king big enough for two people?
For most couples, yes. The UK king gives 75cm each for two people sharing, which is 7.5cm more each than the UK double. That extra room helps if you currently wake up touching, although a large dog on the bed will eat into it quickly.
Is the Comfort 800 in a UK king long enough for tall people?
It is 200cm long, or 6ft 6in, which is 10cm longer than the UK double, the UK small double and the UK single. If one of you is over six foot, the length may matter more than the width.
What size bedroom do I need for a SleepSoul Comfort 800 UK king?
We suggest allowing at least 2.7m x 2.9m. New build master bedrooms can feel smaller than their floor plan once fitted wardrobes are in, so measure the clear space. If you fall short, the UK double needs at least 2.6m x 2.8m.
Will I feel my partner move on a UK king SleepSoul Comfort 800?
Less than on a narrower size, most likely. The 800 pocket springs respond individually, and the UK king puts 75cm between you each rather than the 67.5cm you get on a UK double. Across verified owner reviews, restless partners are a common reason people choose pocket springs.
Should we choose the UK king or UK double Comfort 800?
If your room allows at least 2.7m x 2.9m and you share every night, the UK king is the better fit, with 7.5cm more each and 10cm more length. If space is tight, the UK double is the sensible choice. Compare the retailers listed on this page for current prices.