Harrison Spinks Bronze 3500 Pocket Ortho Mattress (Firmer Feel)
Mattress
Harrison Spinks Bronze 3500 Pocket Ortho Mattress (Firmer Feel)
Size
Firmness
Firm
Construction
Depth (cm)
27
Layers
5
Layer Details
- British wool. A layer of British wool creates a plush, sumptuous sleeping surface. Wool also regulates temperature naturally, which means you're less likely to wake up clammy.
- Cotton, hemp and flax blend. A blend of cotton, hemp and flax wicks moisture away from your body. In practice, that keeps the mattress feeling fresher for longer.
- Hemp and Ecotex fibres. Hard-wearing hemp and strong Ecotex fibres complete the comfort layers. These add durability, which means the surface should hold its shape over time.
- Micro springs. Layers of 2500 micro springs sit beneath the fillings, adding gentle bounce. They adapt to your body, which means a more responsive feel than fillings alone.
- Pocket springs. The base layer holds 1000 Cortec Quad Revolution pocket springs. Each spring moves independently, which means support where you need it and less disturbance from a restless partner.
Layer details from mattressonline.co.uk product page, September 2026.
- Fits a small room with space to spare: At 3ft wide, this size needs a floor area of just 2.1m x 2.8m by our guidance, which leaves a child's room usable rather than cramped.
- Firm support for growing sleepers: The firmer pocket spring build gives teens and children steady, even support, although lighter kids may find it takes a little getting used to.
- Natural fillings, no foam: Wool, cotton, hemp and flax breathe and wick moisture, which means a fresher surface for a warm-sleeping teenager or a stuffy loft room.
- A sensible guest room choice: Two UK singles fit where one big bed would dominate, and single bedding is the cheapest and easiest to find of any size.
- Less to shift on delivery day: A 90cm-wide mattress is far easier to carry up a narrow staircase or into a student room than any double size.
This size suits you if...
You're buying for a child's or teenager's room where the bed shares floor space with a desk and toy storage, you're furnishing a spare room or student flat with a frame already in place, or you sleep alone and want a quality pocket spring mattress in the smallest standard adult size.
Consider another size if...
You share the bed, or you're a solo adult who likes room to sprawl. We'd recommend the UK small double instead: it's 30cm wider than the UK single, the same length, and we suggest at least 2.4m x 2.8m of floor space for it.
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What size is the Harrison Spinks Bronze 3500 in a UK single?
The UK single measures 90 x 190cm, which is 3ft x 6ft 3in. That's the standard one-person size in the UK, so it fits ordinary single frames, divans and standard single bedding without any hunting for unusual sheet sizes.
Will the UK single Bronze 3500 fit a bunk bed or mid sleeper?
The width and length match standard bunk and mid-sleeper frames, but this mattress is 27cm deep, which is more than many raised frames allow. Check your frame's maximum mattress depth and guard rail height before buying, especially for a top bunk.
Is a UK single big enough for an adult?
For most solo adults, yes. At 90cm wide and 190cm long it's the standard adult one-person size, comfortable for a spare room or first flat. If you're over six feet tall, though, the 190cm length is snug; the UK king is 10cm longer.
Should I buy the UK single or the UK small double?
The UK single is 30cm narrower than the UK small double, and the two are the same length. If the sleeper is a child, teen or occasional guest, the UK single is usually plenty. A solo adult who wants stretching room, and a room of at least 2.4m x 2.8m, may prefer the UK small double.
How much floor space does a UK single mattress need?
We suggest allowing at least 2.1m x 2.8m, which gives you a walkway and space to make the bed. That makes the UK single a realistic fit for box rooms, loft conversions with sloping ceilings, and children's rooms where a wardrobe and desk compete for space.