Harrison Spinks Emerald 16500 Pocket Mattress (Medium Feel)
Mattress
Harrison Spinks Emerald 16500 Pocket Mattress (Medium Feel)
Size
Firmness
Medium
Construction
Depth (cm)
29
Layers
3
Layer Details
- Comfort fillings. Layers of natural British wool, cotton, hemp and flax fibres sit at the sleep surface. One side places wool closer to the top for winter warmth, while the other includes moisture-wicking cotton for summer freshness, so you flip the mattress with the seasons.
- Mini Pocket Springs. A layer of 15,800 mini springs delivers bouncy comfort, with the small pockets creating airflow throughout the mattress. They reach areas that broader springs can miss, such as the hips and lower spine.
- Support System. At the base, 700 Cortec™ Quad springs are encased in cloth pockets and secured into groups of four. They're highly responsive, providing support based on your unique weight, shape and movement.
Layer details from mattressonline.co.uk product page, September 2026.
- 75cm each, every night: Two people sharing get 75cm of width apiece, so you can prop a pillow, roll over or stretch out without negotiating for space.
- Less disturbance across the width: The 700 Cortec Quad springs respond to each sleeper's weight and movement separately, and the extra width of a UK king puts more distance between you too.
- 200cm of length for taller sleepers: At 6ft 6in long, the UK king is 10cm longer than the UK double, a real relief if one of you is nudging six foot.
- Breathable across a bigger surface: Natural wool, cotton, hemp and flax fillings stay cooler than foam, which matters more when two bodies share one mattress all night.
- Room to work around each other: If one of you gets up hours before the other, the width and responsive springs mean the early riser can slip out with less of a wobble felt across the bed.
This size suits you if...
You share the bed every night and a double has started to feel like a compromise, one of you is tall enough that 190cm mattresses leave feet at the edge, or you keep different hours and want enough width that one partner getting up at five doesn't wake the other. It also suits couples who want breathable natural fillings with proper space to use them.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest for a UK king, or you sleep alone. In either case we'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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Is a UK king big enough for a couple with a dog on the bed?
It helps. At 150cm wide, the Emerald 16500 in a UK king gives two people 75cm each, so a dog claiming a corner leaves you with roughly what a double offers a couple on its own. If the dog is a nightly fixture and takes more than its share, the UK super king adds another 30cm of width.
Is the Emerald 16500 UK king long enough for someone over 6ft?
At 200cm, the UK king is 10cm longer than the UK double and UK single, and for most people over six foot that extra length is the difference between feet on the mattress and feet at the edge. Anyone approaching 6ft 6in, the full length of this size, may still find it snug.
Can two people flip the Emerald 16500 in a UK king?
You'll want two people, yes. It's a dual-sided design you flip with the seasons, wool side up for winter and cotton side up for summer, and at 29cm deep in a 150 x 200cm size it's a substantial thing to turn. Plan it as a two-person job each time.
Does a UK king reduce partner disturbance on this mattress?
Across the 150cm width, the 15,800 mini pocket springs and 700 Cortec Quad springs each respond to weight and movement individually, so one sleeper shifting or getting up early transfers less motion to the other. The width does its own share of the work by simply putting more mattress between you.
Should I buy the UK king or the UK super king?
The UK king suits most couples: proper personal space without demanding a huge room. The UK super king is 30cm wider, the same length, and needs a room of at least 3m x 2.9m by our guidance, against 2.7m x 2.9m for the UK king. Measure first; the wider size dominates a modest bedroom.