Harrison Spinks Silver 6500 Pocket Small Double Mattress (Firmer Feel)
The Harrison Spinks Silver 6500 is a pocket spring mattress in a firm feel, with springs that move independently so a partner shifting in the night disturbs you less.
- Firm feel without sinking too far
- Deeper support under heavier hips
- Five sizes including Small Double
£1,179
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Harrison Spinks Silver 6500 Pocket Mattress (Firmer Feel)
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Mattress details
Mattress
Harrison Spinks Silver 6500 Pocket Mattress (Firmer Feel)
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
Layers
5
Layer Details
British wool & viscose blend
The top layer is a blend of British wool and viscose, with a cover that is free of FR chemical treatment. It gives you a natural-fibre surface to sleep on rather than a foam one.
British wool, hemp & flax blend
A layer of British wool, hemp and flax, included for breathability. It should help air move through the mattress, which is useful if you tend to run warm.
Cotton, hemp & flax blend
This layer is designed to wick away moisture and reduce mould and mildew. In practice, that helps keep the inside of the mattress fresher over time.
Pocket springs
Cortec Quad Revolution and Posturfil pocket springs, with mini and micro springs for contouring. The springs work independently, so the support follows the shape of your body.
Sustainable Ecotex base
The base layer is made from recycled fibres, which adds durability. It gives the natural layers above a firm foundation and suits you if recycled materials matter to you.
Layer details from mattressonline.co.uk and thebedshopedinburgh.co.uk product pages, October 2026.
Key benefits
- Space for one, without the double footprint: At 120cm wide you get 30cm more width than a UK single, so a solo sleeper on a firm surface can change position freely.
- Fits rooms a double crowds: The UK small double is 15cm narrower than the UK double, which can be the difference between walking space beside the bed and squeezing past it.
- Firm support suits solo back and front sleepers: The firmer feel holds you level rather than letting you sink, and in this size all 120cm of it is yours alone.
- Pocket springs settle occasional guests: When a couple shares this size for the odd night, independent springs mean one person turning over disturbs the other less.
- A standard 4ft size: Small double frames and bedding are easy to source in the UK, so replacing a mattress on an existing 4ft base is straightforward.
This size suits you if...
You sleep alone and have outgrown a single but your room, perhaps a box room, loft conversion or a smaller home after downsizing, cannot take a full double. It also fits if you're furnishing a guest room or let where couples stay occasionally rather than nightly, and you want the firm, supportive feel this mattress offers rather than a softer, more cradling surface.
Consider another size if...
You share the bed with a partner most nights, in which case 120cm will feel tight on a firm surface where neither of you sinks toward the middle. We'd recommend the UK double instead, allowing a room of at least 2.6m x 2.8m.
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FAQ's
Is a small double big enough for a couple on the Silver 6500?
For occasional nights, yes. The firm pocket spring surface keeps each sleeper supported on their own side, and the independent springs limit disturbance when one of you moves. For every night, 120cm is a squeeze for two adults, and the UK double or UK king of this mattress would serve a couple better.
What room size do I need for the small double Silver 6500?
We suggest a room of at least 2.4m x 2.8m. That allows space to walk around the bed and open drawers or a wardrobe. The mattress itself is 120 x 190cm, and because the UK small double is 15cm narrower than the UK double, it often fits box rooms and studio spaces where a double would dominate.
Is the small double Silver 6500 a good choice for one person?
It suits a solo sleeper well, particularly a back or front sleeper who wants a firm feel. You get 30cm more width than a UK single to stretch out across, while keeping the same 190cm length. Lightweight side sleepers may still find the firm surface a little unforgiving, whatever the size.
How does the small double compare with the UK king in this mattress?
The UK small double is 30cm narrower and 10cm shorter than the UK king, so the king gives a couple far more room but needs a bedroom of at least 2.7m x 2.9m by our guidance. If you sleep alone in a compact room, the small double is the more sensible footprint.
Where can I buy the Silver 6500 Firmer Feel in a small double?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so what you see reflects current stock and pricing rather than a snapshot. Check that any listing specifies the Firmer Feel variant and the UK small double, 120 x 190cm, before ordering.