Firmness
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)
Certifications
Assessed from Dormeo's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
The main draw here is value. From £249 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 & what's inside
- 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.
Who's it NOT for?
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.
Dormeo Octasmart Premium Mattress
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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, with prices ranging from £249 to £419 depending on size. 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 this price rather than anything unique.
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