Firmness
Medium
Type
Pocket Spring
Depth (cm)
29
Number of Layers
5
Trial Period (nights)
100
Warranty (years)
5
Price Range
£1,569 to £3,029
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.
This mattress avoids foam almost entirely, using layered springs and natural fibres instead. Wool, hemp and flax breathe far better than synthetic fillings, which means it should suit you if you sleep hot or simply prefer natural materials against your body. The three spring systems work at different scales: fine mini springs at the surface for contouring, grouped Cortec Quad Revolution springs that flex with movement and weight, and Posturfil springs beneath. It comes in five UK sizes from Single to Super King, conforms to BS7177: 2008 for home use, and Harrison Spinks is a National Bed Federation Approved Brand. MattressOnline lists a 100-night trial and free front-door delivery within 7 weeks, though those are that retailer's own terms.
Key Features & what's inside
- Wool comfort layer. Soft, springy British wool sits at the surface and moulds around your body shape. It's naturally breathable yet insulating, which means it helps regulate temperature through the seasons.
- Cotton, hemp and flax blend. Further layers of cotton and wool blended with hemp and flax fibres improve airflow within the mattress. These fibres also wick away moisture, useful if you tend to sleep warm.
- Mini pocket springs. A layer of 14000 mini springs contours to your body for personalised comfort. Because each spring moves independently, there's room for air to circulate too.
- Cortec Quad Revolution pocket springs. An award-winning layer of 1000 springs with a dual design, each in its own pocket and secured into groups of four. They're highly flexible, adjusting to your movement and weight through the night.
- Posturfil springs. A base layer of 1500 Posturfil springs, flexible and adaptable. They sense movement to keep support consistent as you shift position.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
If you want a genuinely firm surface, this soft to medium feel probably isn't it, and heavier sleepers who need firmer support may sink further than they'd like. It's also a significant outlay from £1,569, so if you're on a tighter budget, an all-natural spring build like this is hard to justify.
Harrison Spinks Palladium 16500 Pocket Mattress (Medium Feel)
View all mattresses
How firm is the Harrison Spinks Palladium 16500?
Harrison Spinks describes this version as a soft to medium feel, gentler than a standard medium. The retailer page also lists other firmness options, so check you're ordering the feel you want before buying.
How many springs does the Palladium 16500 have?
The listing gives component counts rather than a single total: 14000 mini springs, 1000 Cortec Quad Revolution springs and 1500 Posturfil springs, arranged in separate layers. These figures shouldn't simply be added together as one headline number.
Does the Harrison Spinks Palladium 16500 come with a trial?
MattressOnline lists a 100-night trial with this mattress, along with free delivery to your front door within 7 weeks. Both are that retailer's own offers rather than Harrison Spinks terms, so they may not apply if you buy elsewhere.
What is the Palladium 16500 made of?
Natural materials throughout: British wool, cotton, hemp, flax and Ecotex fibres, layered over three pocket spring systems. It's handcrafted in the UK, 29cm deep, and conforms to BS7177: 2008 for home use.
How long is the guarantee on the Palladium 16500?
The MattressOnline listing states a 5-year guarantee, which matches the warranty other retailers list. As with the trial, confirm terms with your chosen retailer at the point of purchase.
Couldn't find an answer to your question? Send us a message