Horizon Discovery 2000 Pocket Memory Mattress
Mattress
Horizon Discovery 2000 Pocket Memory Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
26
Layers
4
Layer Details
- Removable cover. The cover can be taken off for cleaning, although dry cleaning is recommended rather than a home wash. That is slightly less convenient, but it does help keep the sleep surface fresh.
- Bamboo and memory foam comfort layers. Bamboo memory foam and high density memory foam adapt to your shape, which means pressure relief where you sink in most, at the shoulders and hips. The bamboo brings cooling breathability, useful if standard memory foam has felt warm to you before.
- 1000 mini springs. A layer of 3cm mini springs adds buoyancy, which means the mattress pushes back gently rather than letting you sink too deeply. It gives the foam layers a springier, more responsive feel.
- 1000 pocket spring unit. Steel springs sit in individual fabric casings and respond independently, so each one moves only where you press. In practice that means better contouring and less disturbance from a partner's movement.
Layer details from mattressonline.co.uk product page, September 2026.
- Made for two in an ordinary room: At 135 x 190cm it fits most UK bedrooms with furniture still in place, which is exactly what a shared bed in a typical home needs.
- Less partner disturbance where it matters: The 1000 pocket springs move independently, so with 67.5cm each for two people sharing, one of you turning over is less likely to wake the other.
- Usable width right to the edge: The 12cm foam border supports the sides of the mattress, so neither sleeper loses part of their 67.5cm to a saggy edge.
- Room to allow bedside tables both sides: Allow at least 2.6m x 2.8m and a UK double usually leaves space for a table on each side, which a UK king often does not.
- Easy to dress cheaply: Double sheets and a 200 x 200cm duvet are sold everywhere, handy if you are kitting out a first flat or a whole house at once.
This size suits you if...
You share the bed every night and want the classic couples' size that still leaves your bedroom feeling like a room rather than a mattress showroom. It also suits a solo sleeper who spreads out, or one who shares with a dog or cat that claims a corner, and it makes a comfortable guest bed for visiting couples.
Consider another size if...
You and your partner both sleep on your backs or wriggle, because 67.5cm each can feel snug. If your room allows at least 2.7m x 2.9m, we'd recommend the UK king instead, which is 15cm wider and 10cm longer.
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Is the Horizon Discovery 2000 in a UK double big enough for a couple?
Yes, for most couples. You get 67.5cm each for two people sharing, and the 1000 pocket springs limit motion transfer, so a restless partner disturbs you less. Broad-shouldered pairs or anyone over about 6ft may prefer the UK king, which is 15cm wider and 10cm longer than the UK double.
What room size do I need for the Horizon Discovery 2000 double?
We suggest allowing at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That gives walking space on both sides and usually room for bedside tables. This is our own guidance rather than Horizon's, so measure your room, including where doors and wardrobes open, before you commit.
Will the Horizon Discovery 2000 double fit up narrow stairs?
It arrives as a full-size sprung mattress rather than a rolled foam one, and at 26cm deep it is a substantial thing to carry. Measure any turning stairs in older terraces or tight new build landings first: 135 x 190cm needs a reasonable pivot space on landings and through doorways.
Should I get this mattress in a double or a small double?
For two people sharing regularly, the UK double. The UK double is 15cm wider than the UK small double, and both are the same length, so that extra width goes straight into elbow room. The UK small double suits a solo sleeper in a tighter room, where we suggest at least 2.4m x 2.8m.
Where can I buy the Horizon Discovery 2000 in a double?
Horizon is a Mattress Online registered line, so you cannot shop this mattress around on price. Rather than searching elsewhere, compare the retailer pricing shown on this page, which is updated as it changes, and check the UK double is in stock before planning delivery.