Firmness
Type
Foam
Depth (cm)
14
Number of Layers
2
Trial Period (nights)
Warranty (years)
10
Price Range
£159 to £199
Best Sleeping Position(s)
Certifications
Assessed from MattressNextDay's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
If you need a mattress that can cope with moisture, this makes sense. The waterproof cover handles the practical side while staying breathable, so it shouldn't feel sweaty the way cheap protectors can. EcoFoam® gives it a firm, supportive feel, and because it's made entirely from recycled and re-engineered foam, it's a greener choice than standard foam at this level. The Source 5 fire rating and NBF-approved manufacturing matter if you're buying for a care home, hostel or rental, where compliance isn't optional. Free next day delivery to mainland UK helps if you need it quickly, though some addresses may incur a small fee. Yes, it's a basic 14cm design, but the 10-year guarantee suggests it's built to last.
Key Features & what's inside
- Waterproof Cover. A breathable waterproof cover, which means spills and accidents wipe away without soaking into the foam beneath. MattressNextDay describes it as just as comfortable as it is practical.
- EcoFoam®. A material made from 100% recycled and re-engineered foam, giving a greener product with a reduced carbon footprint. This layer provides the mattress's firm support.
Layer details from mattressnextday.co.uk product page, September 2026.
Who's it NOT for?
This isn't a mattress for someone shopping for everyday adult comfort. At 14cm deep with a firm feel and no spring or pressure-relief layers, it's a little too spartan for a main bedroom. Lightweight side sleepers in particular may find it too firm. If you don't need the waterproofing, look elsewhere.
MattressNextDay Medi Flex Waterproof Contract Mattress
Is the Medi Flex mattress fully waterproof?
Yes, it has a waterproof cover designed to protect the foam underneath, and it's breathable too, so it shouldn't feel clammy the way basic waterproof surfaces sometimes can.
How firm is the Medi Flex contract mattress?
MattressNextDay rates it as firm. That suits back sleepers and anyone who prefers a supportive, no-sink feel, although lightweight side sleepers may find it a little unforgiving.
Is the Medi Flex suitable for care homes and rental properties?
Yes, that's what it's designed for. It's Source 5 fire resistant to BS 7177, the higher standard often required in contract and care settings, and it's made by an NBF-approved manufacturer. The waterproof cover makes it practical where accidents are likely.
What is EcoFoam made of?
EcoFoam® is made from 100% recycled and re-engineered foam, which means a greener product with a reduced carbon footprint compared with standard new foam. The mattress is also vegan friendly and hypoallergenic.
Does the Medi Flex mattress come with a guarantee?
Yes, it comes with a 10-year guarantee, which is generous for a mattress priced from £159. Delivery is free next day to mainland UK, though some addresses may incur a small fee.
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