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.
- A shared size that fits most rooms: At 135 x 190cm, this mattress works in bedrooms where bigger sizes would leave no space for bedside tables on both sides of the bed.
- Pocket springs matter more when sharing: With 67.5cm each for two people sharing, the 1000 independent springs help stop your partner's turning from travelling across a fairly close sleeping space.
- Sensible pick when money is stretched: If you're kitting out a first flat or a whole house at once, this budget hybrid in the standard couples' size keeps one big cost manageable.
- Easy to dress: Standard double sheets and duvets are sold everywhere at every price, so bedding for this mattress never needs hunting down.
- A generous size for one: Sleeping solo, or solo with a cat claiming the far corner, the UK double gives you sprawling room on the medium firm surface.
This size suits you if...
You share the bed every night and your room comfortably takes a 135 x 190cm footprint, you're a solo sleeper who wants space to stretch out without paying for a bigger hybrid, or you're furnishing a guest room that regularly hosts visiting couples and want a supportive medium firm feel without spending much.
Consider another size if...
You and your partner both toss and turn, or one of you is tall, because the UK double can feel snug for two restless sleepers. We'd recommend the UK king instead, allowing at least 2.7m x 2.9m of room space.
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Is the Horizon Adventurer 1000 in a UK double big enough for a couple?
Yes, for most couples. The UK double is the traditional shared size, and the mattress's 1000 pocket springs respond to each of you separately, which softens the effect of sharing. Two broad shouldered or restless sleepers may find it a little cosy, in which case the UK king version is the safer choice.
What room size do I need for the Horizon Adventurer 1000 UK double?
We suggest allowing at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That leaves space to walk round the bed and, in most rooms, keep bedside tables on both sides. This is our guidance rather than Horizon's, so measure your own layout before ordering.
Should I choose the Horizon Adventurer 1000 in a UK double or a UK king?
The UK double is 15cm narrower than the UK king and 10cm shorter. If your bedroom is on the smaller side, or a wardrobe and drawers already fill it, the UK double keeps the room usable. Couples with the space, or anyone over 6ft, will appreciate the UK king's extra length and width.
How much space does each person get on a UK double?
67.5cm each for two people sharing. That's workable rather than roomy, and it's where this mattress's construction helps: the pocket springs and high density foam layer reduce motion transfer, so a partner shifting close by disturbs you less than on a basic open coil bed.
Is a UK double a good size for a guest room?
It's arguably the ideal guest room size, since it accommodates visiting couples as well as solo guests without dominating a smaller second bedroom. The Horizon Adventurer's medium firm feel is a reasonable middle ground for guests with different preferences, and its modest price suits a bed that isn't slept on every night.