Mlily Haluna Natural Pocket 2500 King Size 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
£646.29
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Mlily Haluna Natural Pocket 2500 Mattress in a Box
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Mattress details
Mattress
Mlily Haluna Natural Pocket 2500 Mattress in a Box
Size
Firmness
Construction
Foam
Memory Foam
Natural
Pocket Spring
Rolled
Depth (cm)
27
Layers
5
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.
Key benefits
- More room each than a double: The UK king gives 7.5cm more width per person than the UK double, so you are less likely to brush against a partner who turns over at 2am.
- Length for taller sleepers: At 200cm long, the UK king is 10cm longer than the UK double, which means feet that used to hang off the end should stay on the mattress.
- Usable sides on a wider bed: Mlily's Airtech border with an F-Joint system is designed for edge-to-edge support, so the outer part of your 75cm should feel steady rather than sloping away.
- Space without a super king room: We suggest at least 2.7m x 2.9m for the UK king, compared with 3m x 2.9m for the UK super king, which matters in a modest new build bedroom.
- Cooler sharing: Two bodies warm a bed quickly, and the ventilated Bamboo Air Memory Foam layer is there to encourage airflow, which Mlily says helps regulate temperature.
This size suits you if...
You share every night and the UK double now feels tight, especially when one of you gets up hours before the other. It also suits you if one partner is over six foot and wants length as much as width, or if the dog has quietly claimed the bottom corner.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m once wardrobes are in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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FAQ's
Is the Mlily Haluna Natural Pocket 2500 UK king big enough for two people?
For most couples, yes. A UK king gives 75cm each when two of you share, which is 7.5cm more per person than the UK double. If you both sprawl or a child often joins you, the UK super king gives 90cm each, though it needs a larger room.
Is a UK king mattress long enough if you're over 6ft?
The UK king is 200cm long, 10cm longer than a UK double. For a partner approaching or just over six foot, that extra length is often the real reason to upgrade, because it means less chance of feet pressing against the footboard or hanging over the end.
What size bedroom do I need for a UK king Mlily Haluna mattress?
We suggest at least 2.7m x 2.9m, with 3.2m x 3.2m giving comfortable space to walk round. In a new build master bedroom, measure after the wardrobes and bedside tables are in place, because fitted furniture eats into the floor more than a floor plan suggests.
Should I choose the UK king or UK super king Mlily Haluna?
The UK king gives 15cm less width each than the UK super king, and both are the same length. If your room meets our suggested 3m x 2.9m and you often wake each other, the UK super king is the roomier choice. Otherwise the UK king is the sensible middle ground.
What bedding fits a UK king Mlily Haluna Natural Pocket 2500?
Standard UK king sheets fit, along with a 230 x 220cm king duvet. The mattress is 27cm deep, so check that any fitted sheet you buy states a pocket deep enough for 27cm. Shallow fitted sheets tend to ping off the corners on deeper mattresses.