MLILY Polar 1800 Cool Gel Hybrid Mattress
Mattress
MLILY Polar 1800 Cool Gel Hybrid Mattress
Size
Firmness
Depth (cm)
26
Layers
6
Layer Details
- M-Luxe Cooling Gel-Infused Quilted Cover. A quilted cover infused with cooling gel that actively draws heat away from your body. In practice, that means a cooler, fresher surface on warm nights.
- Reflex Foam. This layer contours to your body shape in a similar way to memory foam, giving personalised support. It's far more breathable, though, so you shouldn't get that trapped-heat feeling.
- Mini Pocket Springs. A layer of small pocket springs that sits close to your body for a finer level of response. It aims for orthopaedic comfort across every part of you.
- Reflex Foam. A second layer of reflex foam, cushioning the transition between the mini springs and the main spring core below.
- Pocket Springs Core. The main support system, with springs that move independently to target each pressure point individually. This is where most of the mattress's structure and push-back comes from.
- High-Density Support Foam Base Layer. A deep layer of Flex Foam at the base that promotes healthy spinal alignment. It anchors the whole mattress and adds full-body tension relief.
Layer details from mattressnextday.co.uk product page, September 2026.
- Two sleepers, springs that work separately: With 67.5cm each for two people sharing, the pocket springs respond to each of you individually, so a restless partner is less disruptive than on a shared foam slab.
- Cooling where couples need it most: Two bodies generate more heat than one, and the gel-infused cover draws that warmth away, which matters far more in a shared UK double than in a single.
- Fits the rooms most of us actually have: At 135 x 190cm, we suggest a room of at least 2.6m x 2.8m, which leaves space for bedside tables on both sides in a typical UK bedroom.
- The smallest size this mattress comes in: MLILY lists the Polar 1800 in double, king and super king only, so the UK double is your route to this cooling hybrid in a compact footprint.
- Bedding is cheap and everywhere: Double sheets and a 200 x 200cm duvet are stocked at every price point, a small saving that adds up if you're furnishing a whole home at once.
This size suits you if...
You share the bed every night and your room can't comfortably take anything wider, or you sleep alone and want space to stretch out, perhaps with a dog or cat claiming its usual corner. It's also a sensible choice for a guest room that hosts visiting couples: the cooling cover and medium firm feel suit a wide range of guests without you knowing their preferences in advance.
Consider another size if...
You and your partner both run warm and tend to drift towards the middle, because 67.5cm each can feel snug. The UK king gives 75cm each for two sharing; allow at least 2.7m x 2.9m of room for it.
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Is the MLILY Polar 1800 in a UK double big enough for a couple?
Yes, for most couples. The UK double gives 67.5cm each for two people sharing, and the pocket springs move independently, so you feel your own side rather than your partner's movement. If one of you is broad shouldered or you both spread out in the night, the UK king gives 75cm each, a noticeable difference.
What room size do I need for the MLILY Polar 1800 double?
We suggest at least 2.6m x 2.8m for a UK double, with around 3m x 3m the comfortable norm. That allows walking space and bedside tables on both sides. If your room is at the smaller end, the double is the right call here: this mattress isn't made in anything narrower.
Should I get the MLILY Polar 1800 in a double or a king?
The UK double is 15cm narrower and 10cm shorter than the UK king. Choose the UK double if your room is around 2.6m x 2.8m or you want to keep bedding costs down; size up to the UK king if you're both tall or you share with a pet who claims a corner.
Does the MLILY Polar 1800 come in a single or small double?
No. MLILY lists this mattress in double, king and super king only, so the UK double at 135 x 190cm is the smallest option. Solo sleepers can still choose it happily, with more bed than strictly necessary, but there's no 90cm or 120cm version to trade down to.
How much does the MLILY Polar 1800 double cost?
Prices change often, so we don't print a fixed figure here. Compare the retailers listed on this page instead; the prices shown are updated as retailers change them. The double is typically the least expensive size of the three this mattress comes in, since you're buying less spring and foam.