Firmness
Firm
Type
Pocket Spring
Depth (cm)
29
Number of Layers
4
Trial Period (nights)
100
Warranty (years)
5
Price Range
£505 to £849
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Choose this mattress if you want a genuinely firm feel with natural fibres near the surface. The cotton layer wicks moisture away, which means a drier, fresher sleep surface, while two layers of soft white fibres add a little cushioning and help the mattress hold its shape over time. The 2,000 pocket springs respond individually to pressure, so a heavier partner moving about is less likely to disturb you. It conforms to BS7177: 2008 for fire resistance. A five-year guarantee is shorter than some brands offer, but the price is fair for a UK-made pocket spring mattress with this spring count, and Mattress Online lists a 100-night trial with purchase.
Key Features & what's inside
- Cotton comfort layer. Cotton fibres naturally wick away moisture, which means a drier, fresher feel through the night. This is the layer closest to you.
- Polyester comfort layer. Polyester fibres encourage airflow to move heat and moisture away from your body. Helpful if you're a warm sleeper.
- Soft white fibres. Two layers of soft white fibres provide cushioned comfort while helping the mattress retain its shape. They also add durability, so the surface should stay consistent for longer.
- Pocket springs support system. A core of 2,000 sturdy steel springs, each encased in its own pocket, responds individually to motion and pressure. In practice, that means personalised support and less disturbance when a partner moves.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
This is a firm mattress, so lightweight side sleepers may find there isn't enough give at the shoulders and hips. If you prefer the slow, contouring hug of memory foam, the springy, fibre-topped feel here will disappoint. And if you want a long guarantee, five years is on the shorter side.
Wentworth Mercer Natural Pocket 2000 Mattress
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How firm is the Wentworth Mercer Natural Pocket 2000?
It's listed as firm, and owner reviews back that up while noting the fibre topping adds a softer surface feel over the firm base. It should suit back and front sleepers, although lightweight side sleepers may find it a little too solid.
Does the Wentworth Mercer Natural Pocket 2000 come with a trial?
Mattress Online lists a 100-night trial, and the page states this requires buying a mattress protector from them at the same time. These are the retailer's own terms rather than the manufacturer's, so check before you buy elsewhere.
How deep is the Wentworth Mercer Natural Pocket 2000?
It's 29cm deep, so most standard fitted sheets should fit, though it's a reasonably tall mattress. That depth comes from the pocket spring core plus the cotton, polyester and soft fibre comfort layers above it.
What guarantee does the Wentworth Mercer Natural Pocket 2000 have?
The Mattress Online listing states a 5-year guarantee. That's shorter than some brands offer, though the mattress is handcrafted in the UK and approved by the National Bed Federation, which offers some reassurance on build quality.
Is the Wentworth Mercer Natural Pocket 2000 good for hot sleepers?
It's a fair choice. The cotton layer wicks moisture and the polyester layer encourages airflow, and pocket spring cores generally breathe better than solid foam. Owner reviews mention freshness and no sweating, so warm sleepers should get on with it.
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