Horizon Adventurer 1000 Pocket Memory Mattress
Mattress
Horizon Adventurer 1000 Pocket Memory Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
25
Layers
3
Layer Details
- Bamboo Memory Foam. A bamboo-infused memory foam layer moulds around your shape, which means built-up pressure on hips and shoulders is eased and aches are relieved. The bamboo adds breathability, helping to dispel heat and moisture.
- High Density Foam. A durable, cushioning layer of high density foam sits beneath the memory foam, adding comfort. It also helps reduce motion transfer, so you feel less of a partner's movement.
- Pocket Springs. 1000 pocket springs respond individually to each area of your body, which means personalised support rather than a one-feel-fits-all base. They also cut down motion transfer between partners.
Layer details from mattressonline.co.uk product page, September 2026.
- 90cm each, every night: Two people sharing get 90cm each, so you can both stretch out fully without negotiating over the middle of the bed.
- Distance plus pocket springs: The 1000 pocket springs move independently, and at this width your partner's tossing happens far enough away that you may barely register it.
- Space for the whole household: When children wander in at 3am or the dog claims a corner, the extra 30cm over a UK king keeps everyone with a workable share.
- Fills a large master properly: In a big period bedroom or a generous new build master, a smaller bed can look lost, whereas the super king suits the proportions.
- Cooler across a bigger surface: The bamboo-infused memory foam helps dispel heat, and with more mattress to spread across, two warm sleepers overlap less.
This size suits you if...
You share the bed every night and want the most space any standard UK size offers, your sleep is regularly interrupted by a restless partner and distance matters more to you than any comfort layer, or your household includes children or pets who treat your bed as theirs and your room comfortably clears our suggested 3m x 2.9m minimum.
Consider another size if...
Your bedroom is smaller than the 3m x 2.9m we suggest, or you'd struggle to walk around a bed this wide. We'd recommend the UK king instead: it's 30cm narrower, the same length, and needs a room of at least 2.7m x 2.9m.
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What room size do I need for a super king Horizon Adventurer 1000?
We suggest a room of at least 3m x 2.9m, with around 3.5m x 3.2m feeling more comfortable once you add wardrobes and bedside tables. Measure the door swing too, as a bed this wide eats floor space quickly. If your room falls short, the UK king needs at least 2.7m x 2.9m.
Is the Horizon Adventurer 1000 super king good for restless couples?
Yes, and this size is the strongest case for it. The 1000 pocket springs respond individually to reduce motion transfer, and the 180cm width gives each of you 90cm, so a partner who turns often is simply further away. Distance does a lot of the work that comfort layers can't.
How much wider is the super king than the king in this mattress?
The UK super king is 30cm wider than the UK king, and both are the same 200cm length. That 30cm is the difference between children or a dog joining you being a squeeze and being routine. If your room clears our 3m x 2.9m suggestion, the extra width is usually worth having.
Will a super king mattress fit through my doors and up the stairs?
At 180 x 200cm this is the largest standard UK size, so tight landings and sharp stair turns need checking before you order. The mattress is 25cm deep, which helps a little with flexing round corners, but measure your narrowest point first, particularly in older properties with winding staircases.
Is a super king a sensible choice if children share the bed?
It's the size we'd point families towards. With 6ft of width, a child arriving in the night still leaves both adults a usable share, and the pocket springs mean their wriggling travels less across the bed. On a UK king the same visit tends to push one parent to the edge.