Harrison Spinks The Classic 2750 Pocket Mattress (Firmer Feel)
Mattress
Harrison Spinks The Classic 2750 Pocket Mattress (Firmer Feel)
Size
Firmness
Firm
Construction
Depth (cm)
24
Layers
5
Layer Details
- Cover. Wrapped in high quality wool and natural viscose, fibres that are incredibly soft to the touch. They're also naturally fire retardant, so no chemical treatments are needed.
- Comfort fillings. Multiple layers of wool, hemp and flax sit beneath the cover. These natural fibres provide soft, cosy comfort and breathe well.
- MicroHD springs. A layer of 2,000 MicroHD springs sits above the core spring unit, which means the surface responds more precisely to your body. It's designed to make the mattress feel more adaptive as you move.
- Cortec Quad springs. The core holds 750 Cortec Quad springs, a design that fuses four springs into one pocket. That means increased responsiveness compared with a single spring doing the same job.
- Support layers. Two layers of Ecotex fibres, made from recycled materials, sit beneath the springs. They give the spring system a stable base to work from.
Layer details from mattressonline.co.uk product page, September 2026.
- Fits where space is tight: At 90cm wide (3ft x 6ft 3in overall), it leaves room for a desk, wardrobe or toy storage in a compact child's bedroom.
- Natural fillings for growing sleepers: Wool, hemp and flax breathe well, which means less overnight heat for a child or teen than a foam single would trap.
- Sensible height for raised frames: At 24cm deep it sits comfortably in most bunk, cabin and mid-sleeper frames, though check the safety rail clears the mattress top.
- Practical for guest and dual-purpose rooms: A spare room that doubles as an office, or two singles for visiting family, works far more easily at this width than any larger size.
- Supportive firmer tension in a child-friendly size: The 750 Cortec Quad springs and 2,000 MicroHD springs give responsive support that suits a lighter body changing position through the night.
This size suits you if...
You're buying for a child or teenager moving up from a cot or small single, you're furnishing a guest room or a spare room that also serves as an office, or you're a solo sleeper in a compact room, a student flat or a loft space where only a narrow footprint fits under the slope.
Consider another size if...
You're an adult who sleeps alone but wants space to spread out, and your room measures at least 2.4m x 2.8m. We'd recommend the UK small double instead: it's 30cm wider than the UK single and the same length.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
What size is the Harrison Spinks Classic 2750 UK single?
It measures 90 x 190cm, which is 3ft x 6ft 3in. That's the standard UK one-person size, so ordinary single sheets and a single duvet fit without adjustment, and it will drop into any standard single bed frame or divan base.
Will the Classic 2750 UK single fit in a bunk or mid-sleeper frame?
The footprint is the standard 90 x 190cm that bunk and mid-sleeper frames are built around. The mattress is 24cm deep, which is on the taller side for a top bunk, so measure the gap between the base and the top of the safety rail before ordering.
How small a room will a UK single fit in?
We suggest allowing at least 2.1m x 2.8m of floor space, which covers most box rooms, loft conversions and children's bedrooms. That leaves enough clearance to walk round the bed and open drawers, with space left over for a desk or wardrobe in most rooms.
Is the Classic 2750 UK single a good choice for a child?
The natural wool, hemp and flax fillings breathe well and the cover is naturally fire retardant without chemical treatments, which many parents prefer. Do check the tension before ordering: this is the firmer feel version, and the retailer listing shows both medium and firm options, so confirm you're getting the one you want.
Could two Classic 2750 UK singles work for a guest room?
Yes, and it's a common setup where guests may be two friends rather than a couple. Each UK single is 90 x 190cm, so measure your room to confirm both beds fit with a walkway between. The prices shown on this page update as retailers change them, so compare before buying two.