Last seen for £749 at Furniture Village on 14th October 2026
Mlily Ultra 300 Super King Mattress
The Mlily Ultra 300 is a 30cm deep, all-foam mattress with a medium feel, built around gel-infused memory foam that adapts to your body while drawing heat away, which means you get that classic contouring hug with less of the warmth foam is known for.
- Cooling gel & ice yarn cover
- Minimises partner disturbance
- Zoned support for spinal alignment
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Some retailers still sell the earlier version of this mattress for less than the current model's best price.
More available sizes
Last seen for £749 at Furniture Village on 14th October 2026
Mattress details
Mattress
Mlily Ultra 300 Mattress
Size
Firmness
Medium
Construction
Foam
Rolled
Memory Foam
Gel
Depth (cm)
30
Layers
5
Layer Details
Top layer
Memory foam infused with cooling gel that conforms to your body and relieves pressure, which means contouring comfort at pressure points like hips and shoulders. The gel actively dissipates body heat, so it should sleep cooler than plain memory foam.
Second layer
Soft comfort foam that gently conforms to your body for an overall cushioned feel. It adds softness without compromising the support underneath.
Third layer
Responsive transition foam with a stabilising effect for balanced support and even weight distribution. It also minimises motion transfer, which means less disturbance when a partner moves.
Fourth layer
Support foam that promotes natural spinal alignment. It's zoned, giving targeted support to your shoulders, hips and lower back.
Foundation layer
High-density support foam forming the base of the mattress. It provides long-lasting support and helps maintain durability and structural integrity.
Layer details from furniturevillage.co.uk product page, September 2026.
Key benefits
- Distance from a restless partner: At 90cm each, a partner who turns all night sleeps further from you, and the motion-dampening transition foam means fewer of their movements carry across to your side.
- Space when a child climbs in: When a little one wanders in at 3am, the 6ft x 6ft 6in surface leaves room for everyone, so no adult ends up clinging to the edge.
- A spot for a large dog: If a big dog sleeps on the bed every night, the extra 30cm of width over a UK king gives it a place without either of you giving up half your side.
- Extra help with shared heat: More bodies in one bed means more warmth, which is where the gel-infused top layer and ice yarn cover help, although this is still memory foam and holds some heat.
- Suits the scale of a large room: In a period house or a generous master bedroom, the 180cm width matches the proportions of the space, where a UK king can look slightly undersized.
This size suits you if...
your partner's tossing and turning regularly wakes you, children or a large dog often end up in the bed with you, and your bedroom comfortably clears our suggested minimum of 3m x 2.9m.
Consider another size if...
your bedroom falls short of 3m x 2.9m once doors and wardrobes are allowed for, or you sleep alone and want a smaller bed. The Mlily Ultra 300 is only listed in the UK super king, so there is no smaller size to choose.
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FAQ's
Is the Mlily Ultra 300 UK super king big enough for two adults and a child?
For occasional nights, yes. Two adults get 90cm each across the 180cm width, so a small child can usually settle in the middle without pushing anyone to the edge. If older children join you most nights, it will feel a little tighter, although you still have the widest mainstream UK size to share.
How much more room does the Mlily Ultra 300 super king give than a king?
The UK super king is 30cm wider than the UK king and the same length. When two people share, that works out as 90cm each instead of 75cm, so you get 15cm more each. For a restless sleeper, that extra width is often what makes the difference to how much you notice them.
Is the Mlily Ultra 300 super king good if my partner moves a lot at night?
It suits restless partners well. The UK super king puts 90cm of space between you and a fidgety sleeper, and physical distance does more than any comfort layer to stop you being disturbed. The transition foam also limits motion transfer, so the movements that do happen are less likely to reach you.
Will a UK super king Mlily Ultra 300 fit in a loft conversion bedroom?
It can, but the sloping ceiling usually decides which wall the bed goes against. We suggest a room of at least 3m x 2.9m. Check you have enough head height where you sit up to read, and room to get out of bed on both sides without ducking.
What should I measure before ordering a UK super king Mlily Ultra 300?
Measure the room first. We suggest at least 3m x 2.9m, and around 3.5m x 3.2m feels comfortable. Check that the bedroom door can still swing open fully with the bed in place. Remember that you'll need super king sheets and a 260 x 220cm duvet, which cost more than smaller bedding.