Wentworth Mercer Deluxe Wool 3000 Pocket Mattress
Mattress
Wentworth Mercer Deluxe Wool 3000 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
29
Layers
3
Layer Details
- Soft White Fibres. Soft synthetic fillings topped with a polyester layer, which means a cosy surface feel the moment you lie down. They're inherently breathable, so this comfort layer shouldn't hold onto heat.
- Wool. A generous layer of natural wool fibres gives deep, plush comfort. Wool is naturally temperature-regulating, which means it works all year round, warming in winter and wicking heat in summer.
- Pocket Springs. 3000 traditional pocket springs made from twice tempered steel, which means each spring responds to your body shape independently rather than the whole surface moving as one. The result is strong, personalised support and less partner disturbance.
Layer details from mattressonline.co.uk product page, September 2026.
- Leaves space in a busy bedroom: We suggest allowing at least 2.1m x 2.8m, so a child's room usually keeps enough floor for a desk and a wardrobe alongside the bed.
- Wool for a teenager who runs warm: The natural wool layer is temperature-regulating, which means a teenager in a stuffy upstairs room is a little less likely to wake up kicking the duvet off.
- A proper bed for the spare room: If your study doubles as a guest room, the UK single fits neatly along one wall and gives visitors pocket spring support instead of a thin fold-out.
- Suits a loft conversion: The 90cm width sits comfortably under a sloping ceiling, where a wider mattress would bring your head closer to the slope every time you sit up.
- Substantial for a single: At 29cm deep it feels like a traditional adult mattress, which suits a single adult well but means a bunk or cabin bed needs checking first.
This size suits you if...
You sleep alone and want natural fillings in a compact room, you're furnishing a child's or teenager's bedroom where the bed shares floor space with storage and a desk, or you want a spare room bed that guests will find properly supportive.
Consider another size if...
You share the bed with a partner, or you already find 90cm cramped on your own. We'd recommend the UK double instead, which gives 67.5cm each for two sharing; allow at least 2.6m x 2.8m.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
Is the Wentworth Mercer Deluxe Wool 3000 UK single too deep for a mid sleeper or cabin bed?
It might be. The mattress is 29cm deep, which is generous for a raised frame. Check the frame maker's maximum mattress depth and make sure the safety rail still sits well above the sleeping surface. For a standard divan or low bed frame, the depth is simply a comfort bonus.
How much room do I need for a Wentworth Mercer Deluxe Wool 3000 single?
We suggest at least 2.1m x 2.8m of floor space for the UK single. That leaves room to walk round the bed and open drawers, which matters in a box room or a child's bedroom that also has to hold a wardrobe and somewhere to do homework.
Is a UK single Wentworth Mercer mattress big enough for an adult?
For many single adults, yes. At 90cm wide it gives one person enough room to turn over, and the 190cm length matches the UK double. If you're tall, the UK king is 10cm longer, although it needs far more floor space.
Should I choose the single or small double in the Wentworth Mercer Deluxe Wool 3000?
The UK single is 30cm narrower than the UK small double and the same length. If you sleep alone but like to spread out, the UK small double gives you that extra width, and we suggest at least 2.4m x 2.8m for it. For a child or a tight room, the UK single is the easier fit.
Is the Wentworth Mercer wool single a good choice for a child's room?
It suits older children and teenagers well, as the UK single is the standard size for kids' beds and leaves floor space for play and storage. The wool helps with temperature through the seasons. Very young, light children may find the medium firm feel a little firm, so bear that in mind.