Mattress Online HydroShield Classic Double Mattress
The HydroShield Classic is a simple, low-cost foam mattress from Mattress Online, available in UK Single, Double and King.
- Water-resistant, wipe-clean cover
- Recovers its shape between sleepers
- 100-night trial & 10-year guarantee
£175
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Mattress Online HydroShield Classic Mattress
More available sizes
Mattress details
Mattress
Mattress Online HydroShield Classic Mattress
Size
Firmness
Medium Firm
Construction
Foam
Rolled
Depth (cm)
10
Layers
Layer Details
Ecofoam
A 10cm layer of Ecofoam made entirely from recycled materials, which means it supports a variety of body shapes while keeping waste out of landfill. It has natural rebound, so it returns to shape between sleepers rather than sagging where the last person lay.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Room for two without crowding the room: At 135 x 190cm, the UK double sleeps a couple while leaving floor space for a wardrobe or chest of drawers in a typical second bedroom.
- Space per sleeper you can picture: Two sharing get 67.5cm each, which suits visiting couples for a weekend comfortably, though tall or broad pairs may want more elbow room nightly.
- A cover that copes with changing guests: The water-resistant cover wipes down between occupants, which means a guest room or rental UK double stays fresh without a full clean after every stay.
- Recovers between different couples: The Ecofoam has natural rebound, so a double used by a string of different pairs springs back rather than holding the shape of the last two sleepers.
- Easy to dress in any let: Double bedding is the most commonly stocked size in the UK, so replacing sheets in a rental or holiday property is straightforward and quick.
This size suits you if...
you're kitting out a guest room or rental for couples who stay a few nights at a time, your spare room needs to hold a bed plus some storage, and a practical, easy-clean surface matters more to you than deep cushioning.
Consider another size if...
you're buying for a couple who will sleep on it every night, or either of you is tall. We'd recommend the UK king instead, allowing at least 2.7m x 2.9m for the room.
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FAQ's
Is the HydroShield Classic UK double big enough for a couple in a guest room?
For short stays, yes. Each person gets 67.5cm of width, which most couples find fine for a few nights. The medium to firm foam and 10cm depth feel better suited to occasional use than to a pair sharing it every night of the year.
HydroShield Classic UK double dimensions in feet?
The UK double measures 4ft 6in x 6ft 3in, or 135 x 190cm. If you're measuring an older bed frame labelled in imperial, that's the figure to check against before ordering.
Will a HydroShield Classic UK double fit in a small second bedroom?
We suggest a room of at least 2.6m x 2.8m for a UK double. That leaves space to walk round the bed, and bedside tables on both sides become realistic once you're nearer 3m x 3m.
HydroShield Classic double or king for a rental property?
The UK king is 15cm wider and 10cm longer than the UK double, giving each sleeper 7.5cm more. It needs a bigger room, though: we suggest at least 2.7m x 2.9m. In a typical rental bedroom, the UK double usually leaves space for tenants' furniture.
Should I get a HydroShield Classic UK double or single for a student let?
The UK double is 45cm wider than the UK single but the same length. Pick the UK double if the room can take it and tenants may have partners over; the UK single fits rooms from 2.1m x 2.8m, by our guidance.