Firmness
Medium
Type
Pocket Spring
Depth (cm)
37
Number of Layers
2
Trial Period (nights)
Warranty (years)
10
Price Range
£899 to £1,499
Best Sleeping Position(s)
Certifications
Assessed from the specification published by MattressNextDay, captured September 2026, and from regular price comparison across our UK retail partners.
Choose this if natural materials matter to you. The sleep surface is a Belgian damask with viscose, over a pillow top of sustainably sourced British wool, which means a breathable, temperature-regulating surface rather than a synthetic one. That tends to suit hot sleepers who find foam mattresses stuffy. Underneath, up to 4,500 pocket springs work independently, so if you share a bed you should feel less of your partner's movement. It's fire resistant to the BS7177: 2008 low hazard standard, and MattressNextDay lists a 10-year warranty and free next day delivery to mainland UK, though some addresses may incur a small fee. It's not cheap, but the build quality is the reason.
Key Features & what's inside
- Pillow Top. A plump pillow top of sustainably sourced British wool, which means a soft, cushioned surface that also helps regulate temperature naturally. Wool wicks moisture away, so it stays fresher through the night than many synthetic fillings.
- Pocket Springs. Up to 4,500 springs, each housed in its own fabric pocket so they compress independently. In practice that means support tailored to where your body needs it, with pressure relief at the shoulders and hips.
Layer details from mattressnextday.co.uk product page, September 2026.
Who's it NOT for?
Skip this one if you need a firm mattress: the medium feel with a plush pillow top will be too soft for some heavier back sleepers. It's also a stretch if your budget is tight, with prices starting at £899.00. And note the pillow top is sewn on, so you can't flip it for the same feel.
Relyon Tonedale 4500 Natural Heritage Mattress
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How firm is the Relyon Tonedale 4500?
It's rated medium, softened further by the wool pillow top on the surface. That suits most side and combination sleepers, although if you prefer a distinctly firm bed you may find it a little too giving.
How many springs does the Relyon Tonedale 4500 have?
The listing states up to 4,500 individually pocketed springs. Each sits in its own fabric pocket and moves independently, which helps with pressure relief and reduces the amount of movement you feel from a partner.
Does the Relyon Tonedale 4500 come with a warranty?
MattressNextDay lists a 10-year warranty on this mattress. Because that term is stated by the retailer rather than on Relyon's own site, it's sensible to confirm the warranty with whichever retailer you buy from.
What sizes is the Relyon Tonedale 4500 available in?
It comes in UK Single, Double, King and Super King, with prices from £899 to £1,499 depending on the size you choose. The mattress is 37cm deep, so check your fitted sheets will stretch to a deeper mattress.
Is there a trial period on the Relyon Tonedale 4500?
The MattressNextDay listing doesn't state a sleep trial for this mattress. If being able to return it after sleeping on it matters to you, ask the retailer directly before ordering, as terms can differ between shops.
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