Mattress Online HydroShield Comfort Mattress
Mattress
Mattress Online HydroShield Comfort Mattress
Size
Firmness
Construction
Depth (cm)
14
Layers
2
Layer Details
- 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.
- A slim build suits raised frames: At 14cm deep, the UK single sits comfortably in bunk beds, cabin beds and mid sleepers, where a taller mattress could rise above the safety rail.
- Water resistance where it matters most: The water-resistant cover is a practical feature in a size mostly bought for children and guests, offering some protection against spills and accidents.
- Fits a room with a lot else in it: At 3ft wide, it leaves space for a desk, wardrobe and toy storage in a child's room, or two beds plus a walkway where siblings share.
- Recycled foam in a kids' room staple: The 10cm Ecofoam layer is made from 100% recycled foam, which means a lower-waste choice for a bed that may only serve a few years before an upgrade.
- Easy bedding, easy budget: Standard single sheets and a 135 x 200cm duvet fit, and both are among the cheapest and easiest bedding sizes to find in UK shops.
- Guest-ready without dominating the spare room: In a spare room that doubles as an office, the 90cm width keeps the desk usable while still giving overnight guests a proper bed.
This size suits you if...
You're buying for a child's room, a bunk or mid sleeper where the slim 14cm depth keeps the safety rail effective, or a guest room or study where the bed can't take over the floor. It also suits a first flat or student room where the frame is provided and you just need a straightforward single mattress with a wipeable, water-resistant cover.
Consider another size if...
You're an adult who sleeps sprawled, or you sometimes share the bed. The 90cm width is snug for restless solo sleepers, so we'd recommend the UK double instead, which is 45cm wider, the same length, and needs a room of at least 2.6m x 2.8m.
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Is the HydroShield Comfort UK single a good choice for a child's bed?
Yes, arguably its best use. The water-resistant cover copes with spills and accidents, the medium to firm feel gives growing backs steady support, and the 90 x 190cm footprint leaves room for a desk and toy storage. Lightweight side sleepers may find it slightly firm, so bear that in mind for older teens.
Will the HydroShield Comfort UK single fit a bunk or cabin bed?
The 90 x 190cm footprint matches standard UK bunk, cabin and mid sleeper frames, and the 14cm depth is a genuine advantage here: it keeps the sleeping surface well below the safety rail on a top bunk. Measure your frame's internal dimensions before ordering, as a few imported frames use EU sizing.
What room size do I need for the HydroShield Comfort UK single?
We suggest at least 2.1m x 2.8m of floor space, which is our own guidance rather than the manufacturer's. That allows room to walk around the bed and open drawers or a wardrobe. In a loft conversion, position the 90cm-wide side under the slope and you can often make an awkward space work.
Is a UK single HydroShield Comfort big enough for an adult?
For a single adult who sleeps fairly still, yes: 90 x 190cm is the standard UK one-person size, and the medium to firm feel suits back and front sleepers. Taller adults should note the 190cm length before buying, and restless sleepers may prefer the extra 45cm of width the UK double offers.
How does the UK single compare with the double in this mattress?
The UK single is 45cm narrower than the UK double, and the two are the same length. The UK double gives 67.5cm each for two sharing and needs a room of at least 2.6m x 2.8m by our guidance. The construction is identical, so you're choosing on space and sleepers, nothing else.