Firmness
Soft
Type
Pocket Spring
Depth (cm)
33
Number of Layers
4
Trial Period (nights)
60
Warranty (years)
5
Price Range
£680 to £1,260
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
This is the Softer version of a mattress that comes in softer and firmer builds, so it suits sleepers who want a gentle, cushioned surface, typically side sleepers and lighter bodies. The wool, silk, cashmere and alpaca fillings are highly breathable, which means less of the clammy warmth you can get from all-foam mattresses. If you're a hot sleeper who still wants a plush feel, that combination is genuinely hard to find at this depth of comfort. The Allergy UK approval matters too: the fillings are naturally hypoallergenic, a real consideration if dust or dander sets you off. Yes, the from-price of £680 isn't cheap, but a 3000-spring unit wrapped in natural fibres rarely is.
Key Features & what's inside
- Pillowtop. A sumptuous tufted pillowtop with layers of British wool. This is what gives the mattress its soft, sink-in first impression.
- Silk, wool, cashmere and alpaca layer. An additional layer of silk, wool, cashmere and alpaca, which means the comfort layers breathe well and regulate temperature rather than trapping heat.
- Sustainable fresh fibres. British wool layered with sustainable fresh fibres. This adds cushioning depth between the natural fillings and the springs.
- Pocket springs. 2000 zoned pocket springs with an additional 1000 mini springs. The zoning means firmer support under heavier areas like your hips, while the mini springs fine-tune the surface response.
Layer details from silentnight.co.uk product page, September 2026.
Who's it NOT for?
This is a soft mattress, so it's unlikely to suit back or front sleepers who need a firmer surface, or heavier sleepers who may sink too far into the pillowtop. If you prefer a supportive feel, the firmer version of this model would be the better starting point. Anyone avoiding animal-derived materials should look elsewhere: wool, silk, cashmere and alpaca all feature.
Silentnight Rest Assured Milldale 3000 Pocket Wool Mattress - Softer
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How firm is the Silentnight Milldale 3000 softer version?
It's the soft option of a mattress that Silentnight offers in softer and firmer builds. Expect a plush, cushioned feel from the tufted wool pillowtop, with the zoned pocket springs providing the underlying support. It suits side sleepers well, although those who like a firm surface should consider the firmer variant.
What is the Milldale 3000 mattress made of?
Natural fillings throughout: British wool, silk, cashmere and alpaca, layered with sustainable fresh fibres over a spring unit of 2000 zoned pocket springs plus 1000 mini springs. The natural fibres make it highly breathable, and it's Allergy UK approved as naturally hypoallergenic.
Does the Milldale 3000 come with a trial and guarantee?
Yes. Silentnight offers a 60-night trial and a 5-year guarantee on this mattress, with delivery in 14 days.
How deep is the Milldale 3000 mattress?
It's 32.5cm deep, which is on the taller side thanks to the pillowtop. It's a point to check against your fitted sheets, as deeper mattresses need deep-fit bedding.
What sizes does the Milldale 3000 come in?
UK Single, Double, King and Super King, with prices ranging from £680 to £1,260 depending on the size you choose.
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