Dormeo Octasmart Premium Mattress
The Dormeo Octasmart Premium is a 17cm foam mattress built around Dormeo's Octaspring foam springs, which means you get some of the springiness of a traditional mattress without any metal coils.
- Firmer at hips, softer at shoulders
- Removable anti-allergenic cover
- 200-night trial & 18-year guarantee
£249
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Dormeo rates the Octasmart Premium Medium/Firm, so it suits back and front sleepers and most side sleepers, although lightweight side sleepers may find it a little too solid at the shoulder. It comes in Single, Double and King sizes, and you get a 200-night trial with an 18-year guarantee, which is generous cover at an affordable starting price. At 17cm deep it is slimmer than many hybrids, so deep fitted sheets may bag slightly.
Mattress specifications
Firmness
Medium Firm
Type
Pocket Spring
Depth (cm)
17
Number of Layers
4
Trial Period (nights)
200
Warranty (years)
18
Price Range
£249 to £419
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
Assessed from Dormeo'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 here is value. From an affordable starting price, you get a zoned foam-spring core, a removable anti-allergenic cover and an 18-year guarantee, terms that plenty of pricier mattresses do not match. The 9cm Octaspring core is arranged in 5 zones, which means firmer support under your hips and a softer feel at the shoulders, helping keep your spine level whichever position you sleep in. Delivery is free and takes 7 to 10 days. Yes, at 17cm it is a fairly shallow mattress, but the 200-night trial gives you a full seven months to decide whether the feel works for you at home rather than guessing in a showroom.
Key features & layer details
Smart performance cover
An anti-allergenic, removable cover with comfort pockets. Being removable means you can take it off for cleaning, which is handy if you suffer with allergies.
Aerocell top layer
A layer of Aerocell foam sits directly beneath the cover. This is the comfort layer you settle into when you first lie down.
9cm Octaspring core
Foam springs arranged in 5 zones, which means different areas of the mattress respond differently to your body. You should feel firmer support under heavier areas like the hips and a gentler give at the shoulders.
Ecocell base
An Ecocell foam base anchors the mattress. It provides the stable foundation the spring layer works against.
Layer details from dormeo.co.uk product page, September 2026.
Best suited for?
Back sleepers
The Medium/Firm rating and 5-zone Octaspring core give firmer support under the hips, which helps keep your body level when lying on your back.
Front sleepers
Medium/Firm feel and firmer support under the hips mean your midsection is less likely to sink too far when you lie face down.
Budget buyers
Dormeo describes the starting price as affordable, and you still get a zoned foam-spring core, a removable cover and an 18-year guarantee.
Allergy sufferers
The anti-allergenic cover is removable, which means you can take it off and clean it whenever you like.
Combination sleepers
Zoned support firmer at the hips and softer at the shoulders suits changing positions through the night, and the 200-night trial lets you check this at home.
If you prefer a genuinely soft, sink-in feel, the Medium/Firm rating will likely feel too solid, particularly for lightweight side sleepers. It is also a slim 17cm deep, so if you like a tall, hotel-style mattress or need extra depth for a heavier body weight, look elsewhere.
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.
Dormeo Octasmart Premium Mattress
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FAQ's
How firm is the Dormeo Octasmart Premium mattress?
Dormeo rates it Medium/Firm. In practice that suits back and front sleepers well, and the 5-zone Octaspring core softens the feel at the shoulders, although side sleepers with lighter frames may still find it slightly firm.
Does the Dormeo Octasmart Premium have a trial period?
Yes, Dormeo offers a 200-night trial, so you can sleep on it at home for around seven months before committing. It also comes with an 18-year guarantee, according to Dormeo's product page.
How deep is the Dormeo Octasmart Premium mattress?
It is 17cm deep, which is on the slim side compared with many hybrids. Standard fitted sheets will fit easily, but extra-deep ones may be a loose fit.
What sizes does the Dormeo Octasmart Premium come in?
It is available in UK Single, Double and King. Delivery is free and takes 7 to 10 days.
Is the Dormeo Octasmart Premium good for allergy sufferers?
The smart performance cover is anti-allergenic and removable, so you can take it off for cleaning. That makes it a reasonable pick if allergies are a concern, a common feature at an affordable starting price rather than anything unique.
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