Wentworth Mercer Premium Naturals 8000 Pocket Mattress
Mattress
Wentworth Mercer Premium Naturals 8000 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
32
Layers
3
Layer Details
- Comfort fillings. Natural wool and cotton fillings sit at the top, finely layered for a cosy surface feel. Beneath them, 7000 mini pocket springs add a sumptuous, cushioned quality without softening the underlying support.
- Support system. The core is 1000 traditional pocket springs, each encased in its own fabric pocket. Every spring reacts independently to your body shape, which means support where you need it and less disturbance from a partner's movement.
- Edge support. Butterfly springs around the border create a sturdy edge, backed by a rod frame that secures the spring system right to the perimeter. In practice, this means you can use the full width of the bed and sitting on the edge feels stable.
Layer details from mattressonline.co.uk product page, September 2026.
- Space left for everything else: We suggest at least 2.1m x 2.8m of floor space for a UK single, so a wardrobe and desk can share a child's bedroom without a squeeze.
- Two beds in one spare room: Two UK singles with a walkway between them let a guest room take siblings or friends who'd rather not share.
- Firm support for growing bodies: The 1000 full-size pocket springs each move on their own, which means a teenager's hips and shoulders are supported rather than sinking.
- Usable to the very edge: Butterfly springs and a rod frame run around the border, so a child sitting on the side to get dressed won't feel it tip.
- Cooler in a small, warm room: Wool, cotton and silk fillings let air move through the top layers, a help in a compact bedroom or loft conversion that holds heat.
This size suits you if...
You sleep alone and want firm, natural-filled support in a compact bedroom, or you're furnishing a child's or teenager's room where storage and a desk also need floor space. It also suits you if you're setting up a spare room with two separate beds.
Consider another size if...
You're an adult who sprawls, or a partner regularly stays over. We'd recommend the UK small double instead, which is 30cm wider at the same length; we suggest at least 2.4m x 2.8m for it.
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.
Will the Wentworth Mercer Premium Naturals 8000 UK single fit a bunk bed or mid sleeper?
Possibly, but check first. The mattress is 32cm deep, and raised frames such as bunks, cabin beds and mid sleepers usually set a maximum mattress depth so the safety rail stays high enough above the sleeper. Look for that figure in the frame maker's instructions before ordering; if the limit is lower than 32cm, choose a different frame.
What size room do I need for a UK single Wentworth Mercer mattress?
We suggest allowing at least 2.1m x 2.8m for a UK single. That leaves room to walk round the bed and open drawers. In a room shared by siblings, plan for two of those footprints plus a clear path between the beds.
Is the Wentworth Mercer Premium Naturals 8000 too firm for a child?
It might be for a very light child who sleeps on their side. Wentworth Mercer rates it medium firm, and the retailer describes it as firm, so a small, light sleeper may not sink in enough to feel comfortable at the shoulder. Older, heavier teenagers and children who sleep on their back tend to suit firmer support better.
Is a UK single long enough for a tall teenager?
The UK single is 190cm long, the same as the UK small double and the UK double. If your teenager is outgrowing that length, the UK king is 10cm longer. It is also 60cm wider, and we suggest at least 2.7m x 2.9m of floor space for the UK king, so it's rarely practical in a child's room.
Should I get a UK single or a UK small double of the Wentworth Mercer Premium Naturals 8000?
Choose the UK single if floor space matters most, such as in a small bedroom or a study that doubles as a guest room. The UK small double is 30cm wider at the same length, which gives a solo adult room to spread out. We suggest at least 2.4m x 2.8m of floor space for the UK small double.