Wentworth Mercer Pocket Pro 1500 Single Mattress
The Wentworth Mercer Pocket Pro 1500 Mattress has 1500 pocket springs under a wool, cashmere and silk blend, which means firm, responsive support with a soft natural layer on top.
- Firm feel for back sleepers
- Handcrafted in the UK
- Glue-free build, easier to recycle
£449
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Wentworth Mercer Pocket Pro 1500 Mattress
More available sizes
Mattress details
Mattress
Wentworth Mercer Pocket Pro 1500 Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Depth (cm)
29
Layers
4
Layer Details
Wool, cashmere and silk blend
Two layers of a wool, cashmere and silk blend for plush comfort. They soften the top of a firm mattress a little without changing its rating.
Breathable polyester fibre
Two layers of polyester fibres that create a breathable feel, so the surface should feel less stuffy.
Polyester and cotton blend
Two supportive layers of a polyester and cotton blend, which add comfort and support between the soft top and the springs.
Pocket springs
A core of 1500 pocket springs in cloth pockets. They adapt to your weight and movement, so support comes where you need it.
Layer details from mattressonline.co.uk product page, November 2026.
Key benefits
- Fits a small bedroom: We suggest at least 2.1m x 2.8m of floor space, which leaves room for a desk and a wardrobe in a child's bedroom or a box room.
- The easiest size to flip: Turning a double-sided mattress takes noticeably less effort in a UK single than in the larger sizes, so keeping up a seasonal flip is far more realistic.
- Firm support for one: The 1500 pocket springs respond to a single sleeper's weight and movement, which means an even, firm surface for back sleepers who have the bed to themselves.
- Flexible guest sleeping: Two UK singles in a spare room let guests who aren't a couple each have their own firm mattress, with no shared dip in the middle.
- Breathable in a snug room: The polyester fibre layers give a breathable feel, which helps in a warm, compact space such as a loft conversion where the bed sits under the slope.
This size suits you if...
You sleep alone and like a firm surface, you're furnishing a compact child's room or a study that doubles as guest space, or you want a double-sided mattress you can realistically flip each season.
Consider another size if...
You share the bed or tend to sprawl across it at night. We'd recommend the UK double instead: it gives 67.5cm each for two sharing, and we suggest at least 2.6m x 2.8m.
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FAQ's
Will the Wentworth Mercer Pocket Pro 1500 UK single fit a bunk bed?
Possibly, but check the frame first. This mattress is 29cm deep, and raised frames such as bunks and mid sleepers usually state a maximum mattress depth so the safety rail stays high enough above the sleeper. Find that figure in the frame maker's guidance and only go ahead if it allows 29cm.
What size is the Pocket Pro 1500 single in feet?
It is 3ft x 6ft 3in, or 90 x 190cm, which is the standard UK single. That means a standard single frame, single fitted sheets and a single duvet at 135 x 200cm will all fit without hunting for special bedding.
Is a firm UK single mattress a good choice for a child?
Wentworth Mercer rates this mattress firm, and the pocket springs give even support, which suits children who sleep on their backs. Children are light, though, and a lightweight side sleeper may feel too little give at the shoulders and hips. If yours curls up on their side, think carefully about whether a firm surface suits them.
How much room do I need for a UK single Pocket Pro 1500?
We suggest at least 2.1m x 2.8m of floor space for one UK single. If two children share a room, two beds plus a clear walkway between them need considerably more, so measure the room properly, then compare the retailers listed on this page.
Should one adult choose the UK single or UK double Pocket Pro 1500?
The UK single suits one adult who sleeps fairly still and has limited floor space. If you like room to spread out, the UK double is 45cm wider at the same length, and we suggest at least 2.6m x 2.8m for it.