Harrison Spinks Silver 6500 Pocket Mattress (Medium Feel)
Mattress
Harrison Spinks Silver 6500 Pocket Mattress (Medium Feel)
Size
Firmness
Medium
Construction
Depth (cm)
29
Layers
7
Layer Details
- Cover. Woven in-house and free from fire retardant chemicals, meeting fire safety standards naturally. That means fewer chemical treatments next to your skin.
- Wool comfort layer. Layers of British wool give a soft yet springy surface feel. Wool insulates in winter and breathes in summer, which helps regulate temperature year round.
- British wool, hemp and flax blend. A further comfort layer that increases breathability. The blend is designed to reduce any build-up of mildew and mould.
- Cotton, hemp and flax blend. This layer wicks moisture away and adds more airflow. Useful if you tend to sleep warm or share the bed.
- Ecotex layer. Made from recycled fibres, this layer strengthens the mattress. It also keeps material out of landfill, a small but genuine sustainability point.
- Micro springs. 4,500 mini springs sit above the main unit for targeted, contoured comfort. Their small size means more contact points with your body, so pressure is spread more evenly.
- Pocket springs. The Cortec Quad Revolution system uses 1,000 springs, each with a smaller spring inside, secured in groups of four. Pocketing lets each spring move independently, which means less disturbance when a partner shifts.
Layer details from mattressonline.co.uk product page, September 2026.
- Stretching room for one: At 30cm wider than the UK single, this size gives a solo sleeper genuine space to shift position without meeting the edge.
- A double bed for a compact room: Being 15cm narrower than the UK double, it can be the difference between a bedroom that works and one where the door barely clears the frame.
- Wool and hemp breathability in a smaller footprint: The wool, hemp and flax comfort layers breathe and wick moisture, which means a box room that traps heat is less of a problem at night.
- Independent springs suit occasional sharing: The 1,000 pocket springs move independently, so when a visiting couple shares the 120cm width, one person turning disturbs the other less.
- Standard 4ft bedding and frames: The small double is a standard UK size, so fitted sheets and frames are easy to find, and a normal double duvet drapes generously over it.
This size suits you if...
You sleep alone, you've outgrown a single, and your room can't spare the width a full double demands. Or you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly. The soft to medium feel suits side sleepers and lighter builds, so it's a comfortable match for a teenager moving up from their first bed too.
Consider another size if...
You share the bed every night, because 120cm is snug for two adults long term. If your room measures at least 2.6m x 2.8m, we'd recommend the UK double instead for the extra 15cm of width.
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Is a UK small double big enough for the Harrison Spinks Silver 6500 to suit a couple?
For occasional stays, yes. The independent pocket springs limit disturbance when one person moves, which helps two people share 120cm. For every night, most couples find it tight, and the soft to medium surface means heavier pairs will sink towards each other. Nightly sharers should look at the UK double or UK king pages of this mattress.
What room size do I need for the Silver 6500 in a UK small double?
We suggest a room of at least 2.4m x 2.8m. That leaves enough space to walk round the bed and open drawers or a door without squeezing past the frame. It's our own guidance rather than the manufacturer's, so treat it as a comfortable minimum and measure your room, including any sloping ceilings, before ordering.
How much wider is a UK small double than a single?
The UK small double is 30cm wider than the UK single, and the two are the same length at 190cm. That extra width is what makes it appealing for a solo adult, or a teenager who has outgrown a single: more room to spread out without the footprint of a full double.
Will the small double Silver 6500 fit in a loft conversion or box room?
Often, yes. At 120 x 190cm it's 15cm narrower than a UK double, which can matter under a sloping ceiling or where the door swing is tight. Allow at least 2.4m x 2.8m of floor space, and check where the ceiling height drops, since you'll want standing room on at least one side of the bed.
Where can I buy the Harrison Spinks Silver 6500 in a small double?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so it's worth checking back before you buy. Make sure the listing specifies the UK small double at 120 x 190cm, as this mattress also comes in single, double, king and super king sizes.