Firmness
Type
Hybrid
Depth (cm)
25
Number of Layers
6
Trial Period (nights)
120
Warranty (years)
10
Price Range
£399
Best Sleeping Position(s)
Certifications
Assessed from Mysa's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Cooling is where this mattress puts its effort. The BeFree 3D mesh cover is designed for airflow, the graphite-infused foam beneath it draws heat away from your body, and a layer of breathable microcoils keeps air moving through the middle of the mattress. Underneath, the 5-zone pocket springs adapt independently to your movements, which means support goes where your body needs it and your spine stays in a more neutral position. It's hypoallergenic, vegan-friendly and GoodHomes Approved, and the cover washes at 40°C. Delivery is free across the UK, with next-day available if you order before 12pm. At £399 for a hybrid with this much going on inside, the price is honest rather than a stretch.
Key Features & what's inside
- BeFree® 3D mesh knit cover. A removable knit cover that Mysa says is 40% more breathable than standard knits of the same weight, which means less heat builds up around you overnight. It's machine-washable at 40°C, a small feature that makes a real difference over years of use.
- AeroSpheric HR-GX® graphite-infused foam. Open-cell foam infused with graphite spheres, claimed to deliver twice the cooling of regular graphite foam. It moulds to your body shape while wicking away excess moisture, so you get contouring without the warmth memory foam is known for.
- Microcoil® ergonomic support layer. Small individual open coils that conform closely to your body for targeted pressure relief. They're also highly breathable, adding another route for air to move through the mattress.
- AeroSync HR-GX® multi-zoned comfort foam. High-resilience polyurethane foam that contours across multiple pressure zones, which means cushioning where your hips and shoulders press down hardest. Mysa describes the effect as weightless-feeling.
- 5-zone pocket spring system. Individually pocketed springs that respond independently to your movements, giving orthopaedic-style support to key areas of your body. This is the layer doing most of the work to keep your spine aligned.
- Firm foam base layer. A high-density foam foundation beneath the springs. It gives the whole mattress a stable base to work from.
Layer details from mysasleep.co.uk product page, September 2026.
Who's it NOT for?
Sizes are the main limitation: it comes in UK Small Double and Double only, so it's not an option if you need a single, king or super king. Lovers of a soft, enveloping feel may also find the medium-firm surface slightly too solid, and it's currently stocked by just one retailer.
Mysa Glacier Hybrid Memory Mattress
View all mattresses
Is the Mysa Glacier hybrid good for hot sleepers?
Cooling is its main design focus. The graphite-infused foam is claimed to deliver twice the cooling of regular graphite foam, the mesh cover is 40% more breathable than standard knits of the same weight, and the microcoil layer keeps air moving through the core.
How firm is the Mysa Glacier mattress?
Mysa describes it as medium-firm. That suits most back and side sleepers, although lightweight sleepers who like a plush surface may find it a touch firm at first.
Does the Mysa Glacier come with a trial and guarantee?
Yes. Mysa offers a 120-night trial and a 10-year guarantee, so you have a full season or more to decide at home before you're committed.
What sizes does the Mysa Glacier come in?
Just two at present: UK Small Double and UK Double. If you need a single or a king, you'll need to look elsewhere in Mysa's range or beyond.
Can you wash the Mysa Glacier mattress cover?
Yes, the BeFree 3D mesh cover is removable and machine-washable at 40°C, which makes it easier to keep fresh than most fixed covers.
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