Firmness
Medium Firm
Type
Hybrid
Depth (cm)
27
Number of Layers
7
Trial Period (nights)
100
Warranty (years)
10
Price Range
£499 to £1,069
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 here is the layered construction. A 2cm layer of Luna Fusion Cool Memory Foam moulds around your shape to ease pressure, and its open cell structure helps air move through, which means less of the trapped-heat feeling memory foam is known for. Beneath that, 2000 mini pocket springs add airflow and a gentle bounce, while a core of 4000 Luna Pocket springs gives tailored support across your whole body. A foam encapsulated border firms up the edges, useful if you sit on the side of the bed or sleep near it. Yes, the medium to firm feel is on the supportive side, but that suits back and front sleepers well.
Key Features & what's inside
- Knitted cover. A soft-to-touch knitted cover sits on top. It is the first thing you feel, and it is designed to be gentle rather than scratchy.
- Luna Fusion Cool Memory Foam. A 2cm layer that moulds around your shape to ease built-up pressure at the hips and shoulders. Its open cell structure lets air pass through, which means it should sleep cooler than traditional memory foam.
- Mini Pocket Springs. A layer of 2000 mini springs with small pockets for airflow, helping to dispel heat. They also add a comforting bounce-back feel, so you do not sink without response.
- Reflex Foam. A 3cm layer of Reflex foam that reinforces the medium to firm comfort level. It acts as a transition between the softer top and the springs below.
- Reflex Foam. A deeper 5cm layer of Reflex foam doing the same job, adding stability and firmness. Together the two foam layers stop you feeling the spring core directly.
- Luna Pocket Springs. The sturdy core of 4000 Luna Pocket springs, each moving independently to give tailored full-body support. This is where the mattress earns its supportive, medium to firm character.
- Foam encapsulated border. A foam wall around the edge provides durable edge support. In practice that means a reduced roll-off feel and a usable sleep surface right to the sides.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
If you prefer a soft, sink-in feel, the medium to firm rating here will likely feel too solid, and lightweight side sleepers may find it a little unforgiving at the shoulder. The memory foam layer is fairly thin at 2cm, so this is not the deep-hug memory foam experience some people are after.
Luna 6000 Support Gel Memory Pocket Hybrid Mattress
Is the Luna 6000 mattress firm or medium?
The product page describes it as medium to firm. In practice that means a supportive feel with a little surface softness from the memory foam layer, rather than a plush, sink-in sensation. It tends to suit back and front sleepers, and heavier side sleepers, better than lightweight side sleepers.
Does the Luna 6000 sleep hot?
It is designed with cooling in mind. The Luna Fusion Cool Memory Foam has an open cell structure to enhance breathability, and the 2000 mini pocket springs create airflow channels that help dispel heat. Hybrids generally run cooler than all-foam mattresses, though no mattress can promise a cool night for everyone.
How deep is the Luna 6000 mattress?
It is 27cm deep. That is a substantial depth, so standard fitted sheets should still work, but if yours are on the shallow side it is worth checking before it arrives.
Does the Luna 6000 come with a trial and guarantee?
Mattress Online lists a 100-night trial and a 10-year guarantee with this mattress. Those are the retailer's own terms rather than a manufacturer promise, so if you buy elsewhere, check what that seller offers before ordering.
What sizes does the Luna 6000 come in?
It is available in UK Single, Small Double, Double, King and Super King, with prices ranging from £499 to £1,069 depending on the size you choose.
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