Mlily Haluna Natural Pocket 2500 Mattress in a Box
The Mlily Haluna Natural Pocket 2500 Mattress in a Box combines a wool and bamboo memory foam cover with a ventilated Bamboo Air Memory Foam layer, which means you may stay cooler for longer.
- Ventilated layer helps you sleep cooler
- Support right to the edges
- 42-night trial & 5-year guarantee
£399.43
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The Mlily Haluna Natural Pocket 2500 is a single-sided pocket spring mattress with 2500 springs, bamboo and comfort foam layers, and a quilted wool cover. It arrives vacuum packed in a roll and is 27cm deep. It suits sleepers who want foam contouring over spring support, particularly if you run warm. Mlily doesn't publish a firmness rating. It comes in a UK single, UK double, UK king and UK super king, with a 5-year guarantee from Mlily and a 42-night trial from Archers Sleepcentre.
Mattress specifications
Firmness
Type
Pocket Spring
Depth (cm)
27
Number of Layers
5
Trial Period (nights)
42
Warranty (years)
5
Price Range
£399 to £758
Certifications
Assessed from Mlily's published specification for this mattress, captured October 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The main draw is temperature. A ventilated Bamboo Air Memory Foam layer encourages airflow, which Mlily says helps regulate body temperature, so you should stay cooler than on a solid foam layer. Beneath it, Flex Comfort Foam cushions and adapts to your shape, while the pocket springs give all-over support. An Airtech border with an F-Joint system gives edge-to-edge support, so the sides should feel usable rather than sagging. It's single-sided, so there's no flipping to remember. Suits sleepers who like a foam-topped feel with spring support underneath, although Mlily doesn't publish a firmness level, so the exact feel is hard to judge in advance.
Key features & layer details
Wool and bamboo memory foam cover
A quilted cover that blends wool with bamboo memory foam, with a stretch knit finish. It gives a plush top surface and a naturally soothing feel.
Bamboo Air Memory Foam
A ventilated memory foam layer that encourages airflow through the mattress. Mlily says this helps regulate body temperature, so you stay cooler for longer.
Flex Comfort Foam
A responsive foam layer that adapts to your body contours. It adds cushioning between the memory foam and the springs.
Pocket springs
Mlily's 2500 H-Spring system of individually wrapped springs. It adds to the feeling of comfort while giving all-over support as you sleep.
Flex Support Foam
A custom foam base layer that provides support from the bottom up. It gives the springs a stable foundation.
Layer details from mlily.uk product page, October 2026.
Best suited for?
Warm sleepers
A ventilated Bamboo Air Memory Foam layer encourages airflow through the mattress, which means you should stay cooler than you would on a solid foam layer.
Side sleepers
Memory foam and Flex Comfort Foam layers adapt to your body contours, which means shoulders and hips get cushioning with pocket springs giving support underneath.
Couples
Individually wrapped pocket springs give all-over support, and the Airtech border with F-Joint system supports the edges, so both sides of a double or larger bed stay usable.
Combination sleepers
Edge-to-edge support from the Airtech border means the sides stay usable as you move around, while the foam-topped surface keeps a cushioned feel in every position.
If you want to know the firmness before you buy, this might not be the best choice, because Mlily doesn't publish a rating. It's also single-sided, so you can't flip it, and the memory foam layers mean it's not for anyone who dislikes foam contouring. Only four sizes are offered, with no UK small double.
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.
Mlily Haluna Natural Pocket 2500 Mattress in a Box
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FAQ's
How firm is the Mlily Haluna Natural Pocket 2500 Mattress in a Box?
Mlily doesn't publish a firmness rating for it. The wool and memory foam cover and Flex Comfort Foam suggest a cushioned surface over spring support, but if firmness matters to you, check the trial terms before buying.
What sizes does the Mlily Haluna Natural Pocket 2500 Mattress in a Box come in?
It comes in a UK single (90 x 190cm), UK double (135 x 190cm), UK king (150 x 200cm) and UK super king (180 x 200cm). There's no UK small single or UK small double.
How deep is the Mlily Haluna Natural Pocket 2500 Mattress in a Box?
It's 27cm deep. That's the total of its five layers: the quilted cover, Bamboo Air Memory Foam, Flex Comfort Foam, pocket springs and Flex Support Foam.
Does the Mlily Haluna Natural Pocket 2500 Mattress in a Box have a trial or guarantee?
Mlily gives a 5-year guarantee. Archers Sleepcentre offers its own 42-night comfort trial, so check its conditions before you order. The trial is the retailer's offer, not Mlily's.
Is the Mlily Haluna Natural Pocket 2500 good for hot sleepers?
It's designed with warm sleepers in mind. A ventilated Bamboo Air Memory Foam layer encourages airflow to help regulate temperature. It still has memory foam and a wool-blend cover, so very hot sleepers should use the trial to check.
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