Firmness
Medium Firm
Type
Hybrid
Depth (cm)
25
Number of Layers
5
Trial Period (nights)
100
Warranty (years)
5
Price Range
£339 to £619
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
The main draw is the top layer: a plush 5cm of Bamboo Charcoal Memory Foam with air channels, designed to let cool air move through and absorb moisture. Memory foam has a reputation for running warm, so this is a sensible attempt to offset that, although across owner reviews some people still report it can trap heat. Beneath it, 2500 pocket springs adapt to your weight individually, which means better support along your spine and less motion transfer if you share a bed. A foam border around the edge firms up the sides, so you can sit or sleep near the edge without feeling like you'll slide off.
Key Features & what's inside
- Bamboo Charcoal Memory Foam. A plush 5cm top layer with air channels that let cool air flow through and absorb moisture. It gives that classic slow-sinking memory foam hug while working to keep you cooler.
- Flex Comfort Foam. A 2cm transition layer that adds a little extra give, which means you settle into the mattress rather than lying on top of it.
- Pocket Springs. 2500 pocket springs that respond to your weight individually, so heavier areas like hips sink a little further while lighter areas stay supported. This also helps limit disturbance from a partner's movement.
- Core Support Foam. A 4cm base layer that keeps everything stable and helps relieve pressure from your back and joints.
- Aero-Flex foam border. A sturdy foam surround that adapts to your weight and firms up the edges. You can sit on the side or sleep near it without that rolling-off feeling.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
If you sleep hot, be a little cautious: despite the bamboo charcoal layer's cooling design, some owners report the mattress can trap body heat. It's also listed as medium, so back and front sleepers who need a firmer, more supportive surface may find it too forgiving. And if you dislike the sinking memory foam feel, look elsewhere.
Mlily Bamboo+ Superb Memory 2500 Pocket Mattress
Across 84 verified reviews on the Mattress Online product page, it averages 4.7, with owners commonly reporting very comfortable sleep, relief from back pain and good material quality, particularly among side sleepers. The recurring gripe is heat: some say it can trap warmth overnight.
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How firm is the mlily bamboo+ superb memory 2500?
The product page lists it as medium, though you may see it described elsewhere as medium firm. The plush 5cm memory foam top gives a softer initial feel, with the 2500 pocket springs providing firmer support underneath. It suits most sleepers, although lightweight side sleepers get the most from that contouring top layer.
Does the mlily bamboo+ 2500 come with a trial?
Mattress Online lists a 100-night trial, but this is the retailer's own offer, not Mlily's, and it requires you to buy a mattress protector from them. If you purchase elsewhere, check that retailer's terms, as the trial won't automatically apply.
How long is the guarantee on the mlily bamboo+ 2500?
Mattress Online lists a 5-year guarantee on its product page. As this is stated as a retailer offer rather than the brand's own, confirm the terms with whichever retailer you buy from.
How deep is the mlily bamboo+ superb memory 2500 mattress?
It's 25cm deep, made up of a 5cm memory foam layer, 2cm of comfort foam, the pocket spring unit, a 4cm support base and a foam border. That's a generous depth, so check your fitted sheets will stretch to it.
Is the mlily bamboo+ 2500 good for hot sleepers?
It's mixed. The bamboo charcoal memory foam has air channels designed to let cool air through and absorb moisture, and the springs allow airflow through the core. That said, across owner reviews some people report it can trap body heat, so very hot sleepers may want a spring-heavy alternative instead.
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