Firmness
Type
Foam
Depth (cm)
14
Number of Layers
2
Trial Period (nights)
100
Warranty (years)
10
Price Range
£169 to £295
Best Sleeping Position(s)
Certifications
Assessed from Mattress Online's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
The price is the headline here: from £169, you're getting a UK-handcrafted foam mattress with a 100-night trial and a 10-year guarantee, terms usually reserved for pricier models. The recycled Ecofoam base is a genuine plus if sustainability matters to you, and the water-resistant cover offers reassurance for kids' rooms or guest beds. Yes, it's a slim 14cm and single-sided, so you can't flip it to even out wear, but at this price that's a fair trade. Delivery to your front door is free within 2 to 3 weeks, it arrives rolled and vacuum packed, and room-of-choice delivery costs £20 with old mattress removal at £35.
Key Features & what's inside
- Ecofoam. A 10cm layer made from 100% recycled foam, which means the bulk of the mattress does the supportive work while keeping materials out of landfill. It gives the mattress its medium to firm character.
- Reflex Foam. A 4cm layer of Reflex foam sits above, adding pressure-relieving comfort where your body meets the mattress. It also adds durability, helpful in a single-sided design you can't flip.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
At 14cm deep with a medium to firm feel, this isn't the mattress for lightweight side sleepers who need a softer, deeper surface to cushion the shoulder. Heavier sleepers, or anyone used to a plush pillow-top, may also find it a little too shallow and firm for comfort.
Mattress Online HydroShield Comfort Mattress
How firm is the Mattress Online HydroShield Comfort mattress?
Mattress Online describes it as medium to firm. That suits most back and front sleepers, although lightweight side sleepers may find it a little too firm for pressure relief at the shoulder.
Does the HydroShield Comfort mattress come with a trial?
Yes, Mattress Online offers a 100-night trial, so you can sleep on it at home before committing. It's also backed by a 10-year guarantee.
How is the HydroShield Comfort mattress delivered?
It arrives rolled up and vacuum packed within 2 to 3 weeks. Delivery to your front door is free, delivery to a room of your choice costs £20, and old mattress removal is £35.
Is the HydroShield Comfort mattress waterproof?
It has a water-resistant cover, which offers protection against spills and accidents, although the page doesn't detail it as a separate layer. It's a sensible pick for children's rooms or guest beds for that reason.
Can you flip the HydroShield Comfort mattress?
No, it's a single-sided design, so it isn't made to be flipped. The 4cm Reflex foam layer is there to add durability, but you should still rotate it regularly to even out wear.
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