Horizon Odyssey 800 Pocket Memory Mattress
The Horizon Odyssey 800 Pocket Memory Mattress is a hybrid, pairing 800 pocket springs with a graphite-infused memory foam layer at a 23cm depth.
- Minimises partner disturbance
- Contours to ease pressure
- Graphite foam helps you sleep cooler
£249
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Horizon describes the feel of the Odyssey 800 as medium, which means gentler cushioning than the firmer end of the market while the springs keep your spine supported. It comes in five UK sizes, from Single to Super King, and sits firmly in the budget-friendly bracket. You get a 100-night trial and a 5-year guarantee, plus free delivery to most locations. If you want a low-risk first step into hybrid mattresses without a premium price tag, this is a sensible shortlist candidate.
Mattress specifications
Firmness
Medium Firm
Type
Hybrid
Depth (cm)
23
Number of Layers
2
Trial Period (nights)
100
Warranty (years)
5
Price Range
£249 to £790
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
BS 7177
Assessed from Horizon's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The main draw is value. You get pocket springs rather than a basic open coil unit, which means each of the 800 springs moves independently, so a restless partner is less likely to wake you. The 2cm graphite-infused memory foam layer contours to your body and helps relieve pressure on joints, back and hips, and graphite is added to help with cooling. Delivery is flexible: next day on weekdays, a weekday of your choice up to 60 days ahead, or weekend delivery, with a two-hour time slot. Old mattress removal and room-of-choice delivery cost extra. The memory foam layer is slim, but for the price that trade-off is fair.
Key features & layer details
Memory Foam
A 2cm memory layer that contours to your body for personalised comfort and helps relieve pressure on joints, back and hips. It's a cooling layer too, which matters if you tend to sleep warm.
Pocket Springs
800 individual pocket springs that move independently, which means support tailored to where your body needs it and no motion transfer. In practice, you're less likely to feel a partner turning over.
Layer details from mattressonline.co.uk product page, September 2026.
Best suited for?
Couples
Each of the 800 pocket springs moves independently, which means you are less likely to feel a partner turning over during the night.
Budget buyers
Described as sitting firmly in the budget-friendly bracket, it gives you pocket springs rather than a basic open coil unit without a premium price tag.
Warm sleepers
The 2cm memory foam layer is graphite-infused, which is added to help with cooling, so it suits anyone who tends to sleep warm.
Combination sleepers
Independent pocket springs and a slim contouring foam layer give support that follows your body as you change position through the night.
At 23cm deep with a 2cm memory foam layer, this isn't a deeply cushioned mattress, so heavier sleepers or those who love a sink-in feel may want more comfort material. Anyone after a properly firm surface should also look elsewhere, as Horizon rates the feel as medium.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Horizon Odyssey 800 Pocket Memory Mattress
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FAQ's
How firm is the Horizon Odyssey 800 mattress?
Horizon rates it as medium. Owner reviews on mattressonline.co.uk describe the feel as medium-firm with good back support, so expect a balanced surface rather than a soft or very firm one. Lightweight side sleepers wanting a plush feel may find it slightly too supportive.
Does the Horizon Odyssey 800 come with a trial?
Yes, it comes with a 100-night trial, so you can sleep on it at home for a full season before committing. There's also a 5-year guarantee covering the mattress itself.
Is the Horizon Odyssey 800 good for couples?
It's a reasonable choice. The 800 pocket springs move independently with no motion transfer, which means one of you turning over shouldn't disturb the other. It's available in Small Double, Double, King and Super King sizes.
What is the Horizon Odyssey 800 made of?
It's a hybrid with two working layers: a 2cm graphite-infused memory foam layer on top of 800 individual pocket springs, wrapped in a knitted cover. The overall depth is 23cm. It's hypoallergenic and fire resistant, conforming to BS7177: 2008 for home use.
How much does the Horizon Odyssey 800 cost?
It depends on the size you choose, and the price table on this page shows the current price for each size. It's in budget territory for a pocket sprung hybrid, and delivery to most locations is free, with a two-hour time slot provided.
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