Firmness
Soft
Type
Hybrid
Depth (cm)
23
Number of Layers
6
Trial Period (nights)
100
Warranty (years)
10
Price Range
£288 to £524
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.
If you're a hot sleeper, this is where the Bio Cool makes its case. The thermal conductive sugarcane cover draws excess heat away, and the mint-infused fibres add breathability along with a natural antibacterial quality, which means you should feel noticeably cooler than on a standard fibre-topped hybrid. Support comes from 2000 individually cased e-Pocket springs that contour to your body, with a layer of mini pocket springs above them for pressure relief and reduced motion transfer, useful if you share a bed with a restless partner. The recycled-bottle fillings will appeal if sustainability matters to you. A 10-year guarantee is retailer-listed, and Mattress Online offers a 100-night comfort trial, subject to buying a mattress protector from them.
Key Features & what's inside
- Cover. A high-density thermal conductive fabric made from sugarcane yarn, which means excess heat is drawn away from your body as you sleep. The result is a cooler night, particularly useful in warmer months.
- Comfort layer. Soft white fibre fillings that create a cosy initial feel. They're durable and resilient, so they should hold their shape rather than flattening quickly.
- Comfort layer. Mint-infused, plant-based natural fibres that are highly breathable and antibacterial. They resist bacteria growth and add a natural cooling feeling to the sleep surface.
- Comfort layer. Advance e-Fibre filling made from recycled plastic bottles. You get a luxurious layer of comfort with a lower environmental footprint.
- Mini Pocket Springs. Small, individually cased springs sitting above the main support unit. They add comfort and soothing pressure relief while cutting down motion transfer between partners.
- Support system. 2000 e-Pocket springs providing individualised support. Each spring contours to your body shape, moulding to the areas that need it most.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
The retailer page describes this as medium, so if you sleep on your front or you're a heavier build who prefers a properly firm surface, it may feel a little soft for you. And if you want a traditional deep-feeling mattress, the 23cm profile is on the slimmer side.
Jay-Be Bio Cool Hybrid 2000 e-Pocket Mattress
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Is the Jay-Be Bio Cool Hybrid 2000 soft or medium?
The product page lists it as medium, although you may see it described as soft elsewhere. Medium is the wording to trust here: a balanced feel that suits most back and side sleepers, though lightweight side sleepers wanting a plush sink-in surface might prefer something softer.
Does the Jay-Be Bio Cool Hybrid come with a trial?
Mattress Online lists a 100-night comfort trial on this mattress. It's the retailer's own offer rather than a Jay-Be guarantee, and eligibility requires buying a mattress protector from Mattress Online, so check the terms if you buy elsewhere.
How long is the guarantee on the Jay-Be Bio Cool Hybrid 2000?
The retailer listing shows a 10-year guarantee, which is a reassuring span for a mattress at this price.
Is the Jay-Be Bio Cool Hybrid good for hot sleepers?
It's built for them. The sugarcane yarn cover conducts heat away from your body, and the mint-infused fibres are highly breathable with a natural cooling feeling, so warm sleepers should notice a genuine difference compared with a standard fibre-topped mattress.
What sizes does the Jay-Be Bio Cool Hybrid 2000 come in?
It's available in UK Single, Small Double, Double and King, priced from £288 to £524 depending on size.
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