Dormeo Octasmart Premium Deluxe Double Mattress
The Dormeo Octasmart Premium Deluxe is a memory foam hybrid with a Medium/Soft feel, available in UK Single, Double and King.
- Deeper, more cushioned surface
- Air system boosts breathability
- 200-night trial & 20-year guarantee
£399
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Dormeo Octasmart Premium Deluxe Mattress
More available sizes
Mattress details
Mattress
Dormeo Octasmart Premium Deluxe Mattress
Size
Firmness
Medium Soft
Construction
Foam
Memory Foam
Depth (cm)
Layers
2
Layer Details
Memory Foam Top Layer
A top layer of memory foam that moulds to your shape, which means the surface cradles your body rather than pushing back against it. Expect that slow, sinking-in feel memory foam is known for.
Octaspring Technology with Body Zones
Hundreds of Octasprings adapt three-dimensionally to ease pressure at the back, hips and shoulders, so support shifts as you move rather than staying rigid. Three Body Zones mean each area of your body gets a comfort point tuned to it.
Layer details from dormeo.co.uk product page, September 2026.
Key benefits
- A shared bed that fits the room: At 135 x 190cm, the UK double gives couples a proper shared surface while fitting bedrooms where a UK king would dominate.
- 67.5cm each for two sharing: Two people get 67.5cm each, which is workable for most couples, particularly with a Medium/Soft surface that cradles rather than pushes back.
- Octasprings help with close sleeping: The Octasprings adapt three-dimensionally as you move, which means one partner shifting position is less likely to disturb the other on a shared width.
- Room for bedside tables on both sides: Allow at least 2.6m x 2.8m and most rooms will still take a table each side, which matters more in a shared bedroom than people expect.
- Easy, affordable bedding: Double sheets and 200 x 200cm duvets are sold everywhere at every price, useful if you're kitting out a first flat or guest room on a stretched budget.
This size suits you if...
You share the bed every night and want the classic couples' size that still leaves floor space, you're furnishing a first flat or guest room where visiting couples will stay, or you sleep alone but like room to spread out, or to share with a pet who claims a corner. The Medium/Soft feel suits sharers who like to sink in a little.
Consider another size if...
You and your partner both want more personal space and your room measures at least 2.7m x 2.9m. The UK king is 15cm wider and 10cm longer than the UK double, and we'd recommend it instead.
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FAQ's
Is the Dormeo Octasmart Premium Deluxe double big enough for two adults?
For most couples, yes. Two people sharing get 67.5cm each, and the Octasprings adapt independently under each sleeper, so movement transfers less than you might expect. If either of you is broad-shouldered or a restless sleeper, the UK king adds 15cm of width and 10cm of length, which makes a real difference night to night.
What room size do I need for the Octasmart Premium Deluxe in a double?
We suggest a room of at least 2.6m x 2.8m, which is our own guidance rather than Dormeo's. That allows the door to open fully and leaves walking space around the bed. Around 3m x 3m is the comfortable norm if you want bedside tables on both sides plus a wardrobe and drawers.
Should I get the double or the king in this mattress?
It comes down to your room. The UK double fits comfortably where the UK king would dominate, and it suits couples who prioritise floor space. If your bedroom is at least 2.7m x 2.9m and you'd value extra sleeping space, the UK king is 15cm wider and 10cm longer. The feel and construction are identical in both.
Will a double Octasmart Premium Deluxe fit up narrow stairs?
Foam-based mattresses like this one are generally more forgiving on tight turns than rigid pocket-sprung models, as the Octasprings are themselves made of foam. Even so, a 135cm wide mattress needs thought in older terraces or tight new build landings, so measure your stairway and any turns before ordering, and check Dormeo's delivery guidance.
What bedding fits the Dormeo Octasmart Premium Deluxe double?
Standard UK double bedding: sheets sized for 135 x 190cm and a 200 x 200cm double duvet. That's the most widely stocked bedding size in Britain, available everywhere at every price point, which helps if you're furnishing a whole home at once. Some couples size up to a king duvet on a double to end the overnight tug of war.