Harrison Spinks Bronze 3500 Pocket Ortho Double Mattress (Soft to Medium Feel)
The Harrison Spinks Bronze 3500 is a pocket spring mattress with a Soft to Medium feel, handcrafted in the UK and filled with natural materials including British wool, cotton, hemp and flax.
- Soft feel with firmer support beneath
- Wicks moisture if you sleep warm
- Handcrafted in the UK
£1,079
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Harrison Spinks Bronze 3500 Pocket Ortho Mattress (Soft to Medium Feel)
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Mattress details
Mattress
Harrison Spinks Bronze 3500 Pocket Ortho Mattress (Soft to Medium Feel)
Size
Firmness
Medium Soft
Construction
Pocket Spring
Wool
Natural
Depth (cm)
27
Layers
6
Layer Details
Cover
An in-house woven cover that meets fire safety standards without FR chemicals, which means fewer additives next to your skin. A small but genuine plus for anyone conscious of what goes into their bedding.
Wool comfort layer
A layer of British wool sits near the surface, giving that plush, sumptuous first impression when you lie down. Wool also handles temperature well, so it stays comfortable through the night.
Blend comfort layer
A blend of cotton, hemp and flax wicks moisture away from you as you sleep. In practice that means a fresher, drier feel, particularly useful if you run warm.
Hemp and Ecotex layer
Layers of hardwearing hemp and strong Ecotex fibres add structure to the mattress. This helps reduce dips forming in the surface over time.
Micro springs
A layer of 2500 micro springs provides additional bounce that adapts to your body. These respond quickly as you move, so changing position feels easy rather than effortful.
Pocket springs support system
The base is 1000 Cortec Quad Revolution pocket springs, each with a smaller support spring nested inside a larger comfort spring, wrapped in a cloth pocket and secured in groups of four. The result is a softer initial feel backed by deeper support when you need it.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- The classic shared size: At 135 x 190cm, the UK double is the long established two-person size, giving each of you 67.5cm each for two people sharing.
- Fits rooms a king would crowd: We suggest a room of at least 2.6m x 2.8m, which leaves space for bedside tables on both sides in most UK bedrooms.
- Independent springs for two sleepers: The 1000 pocket springs and 2500 micro springs respond to each of you separately, so one person shifting position transfers less movement across the bed.
- Natural fillings across a shared surface: Two bodies raise the temperature under the duvet, and the wool, cotton, hemp and flax fillings wick moisture to keep the surface feeling drier.
- Easy to dress: Standard double sheets and a 200 x 200cm double duvet fit this size, and both are stocked everywhere at every price.
This size suits you if...
You share the bed every night and want the traditional couples' size that still leaves room to walk around it, or you sleep alone and like space to stretch out, perhaps with a dog or cat claiming a corner. It also makes sense for a guest room that hosts visiting couples, where the softer, springy feel suits a range of sleepers passing through.
Consider another size if...
You and your partner both like to spread out, or one of you is a restless sleeper who drifts across the bed. The UK king is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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FAQ's
What are the dimensions of the Harrison Spinks Bronze 3500 UK double?
The UK double measures 135 x 190cm, or 4ft 6in x 6ft 3in. That's the standard British double footprint, so any UK double bed frame or divan base will fit it, and double bedding needs no hunting around.
How much space does each person get on the Bronze 3500 UK double?
Sharing this size gives you 67.5cm each for two people sharing. That's comfortable for most couples, and the softer surface with 2500 micro springs makes changing position easy without disturbing the person next to you. If either of you sleeps sprawled, the UK king's extra 15cm of width may be the better call.
What size room do I need for the Bronze 3500 in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allows bedside tables on both sides and space to open a wardrobe, which is why the UK double remains the default for typical UK bedrooms.
Should a couple pick the Bronze 3500 in a UK double or a UK king?
The UK double is 15cm narrower and 10cm shorter than the UK king. If your room comfortably exceeds our suggested 2.7m x 2.9m for the UK king and you value personal space, size up. In a smaller room, the UK double keeps the bed from dominating everything else.
Is the Bronze 3500 UK double a good choice for a guest room?
Yes, with one caveat. The soft to medium feel and springy, responsive surface suits a wide range of visiting sleepers, and the UK double fits most spare rooms while sleeping two. Guests who strongly prefer a firm mattress, or heavier guests wanting more pushback, may find it a little soft.