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.
- Two sleepers, less disturbance: The 1,000 pocket springs move independently, which means when your partner turns over on their 67.5cm of the bed, you feel far less of it.
- Breathability where couples need it: Wool, cotton, hemp and flax wick moisture and let air through, useful when two bodies share a 135cm surface and the middle of the bed runs warm.
- Fits most UK bedrooms: We suggest at least 2.6m x 2.8m for a UK double, which leaves space for bedside tables on both sides in a typical room where a king would crowd the walls.
- Manageable on delivery day: A 135cm width turns the awkward staircases of older terraces and tight new build landings more easily than the wider sizes in this range.
- Easy to dress: Standard double sheets and a 200 x 200cm duvet are sold everywhere at every price, handy if you're furnishing a whole home and budget is stretched.
This size suits you if...
You share the bed every night and want the traditional couples' size in a natural, breathable mattress, or you sleep alone and like space to spread out, perhaps with a cat or dog claiming a corner. It also makes a comfortable guest room bed for visiting couples, and its footprint leaves room for a wardrobe and drawers in a typical UK bedroom.
Consider another size if...
You're a couple with the room to go bigger, since 67.5cm each is workable rather than generous. We'd recommend the UK king instead: it's 15cm wider and 10cm longer, and we suggest at least 2.7m x 2.9m of room for it.
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Is the Harrison Spinks Silver 6500 double big enough for two adults?
Yes, though it's the snugger of the shared sizes. A UK double gives 67.5cm each for two people sharing, and this mattress helps that width feel calmer: its 1,000 pocket springs move independently, so one person shifting doesn't ripple across to the other. Restless sleepers or taller couples may prefer the UK king, which is 15cm wider and 10cm longer.
What room size do I need for the Silver 6500 in a UK double?
Allow at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That's our guidance, not the manufacturer's, and it assumes you want to open drawers and walk around the bed without sidling. If you'd like bedside tables on both sides, measure the wall the bed sits against before you commit.
Will a double Silver 6500 fit up a narrow staircase?
At 135cm wide, the UK double is one of the easier shared sizes to manoeuvre through the turning stairs of older terraces or a tight new build landing. Pocket spring mattresses can't be folded or rolled the way some foam beds can, so measure your stairwell and any awkward corners before delivery day rather than after.
Should I get the Silver 6500 in a double or a king?
Choose the UK double if your room is near our suggested 2.6m x 2.8m minimum, or if it's a guest room for visiting couples. Choose the UK king if you share every night and either of you is a light sleeper or over 6ft: it's 15cm wider and 10cm longer, and we suggest at least 2.7m x 2.9m for it.
What bedding fits the double Silver 6500?
Standard UK double bedding: fitted sheets sized 135 x 190cm and a 200 x 200cm double duvet, both stocked everywhere at every price point. Given the wool, hemp and flax layers are there to breathe, a natural-fibre sheet such as cotton lets that airflow do its job rather than trapping heat under polyester.