Firmness
Type
Open Coil Spring
Depth (cm)
27
Number of Layers
4
Trial Period (nights)
60
Warranty (years)
5
Price Range
£153 to £320
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Archers Sleepcentre, captured September 2026, and from regular price comparison across our UK retail partners.
This is a mattress for people who know they want firm support and don't want to pay for extras they'll never notice. The extra firm open coil system gives an even, traditional feel, and a rod-edge wire runs around the perimeter, which means the edges shouldn't sag when you sit on them or sleep near the side. The Tencel in the fillings helps with heat flow, a small but welcome touch at this price. Sizes run from small single to super king, so it works for guest rooms as well as main bedrooms. Archers Sleep Centre lists a 60-night comfort guarantee and a 5-year warranty, which adds a little reassurance at this end of the market.
Key Features & what's inside
- Cover. A hard wearing Belgian damask cover with a hand tufted finish. The tufting isn't just decorative: it adds strength and helps the mattress hold its shape over time.
- Fillings. Several layers of quality fillings, including white fibre, a lightweight, high loft material that's hypo-allergenic and keeps its shape, alongside Tencel. Tencel is a eucalyptus treated fibre that improves heat flow and moisture dissipation, which means less clamminess on warm nights.
- Spring System. An extra firm open coil unit made of rows of hourglass shaped Bonnell springs, connected top and bottom by a helical wire running from head to foot. This gives a firm, uniform feel across the whole surface rather than the contouring you'd get from pocket springs.
- Edge Support. A thick rod-edge wire strengthens the perimeter of the spring unit. In practice that means firmer edges to sit on and less of the border breakdown that cheaper open coil mattresses can suffer.
Layer details from archerssleepcentre.co.uk product page, September 2026.
Who's it NOT for?
This isn't the mattress for lightweight side sleepers or anyone who likes a plush, sink-in feel: extra firm means exactly that. Couples who are easily disturbed should also note that open coil springs transfer more movement across the bed than pocket springs, so a restless partner will be more noticeable.
Highgrove Solar Ortho Dream Mattress
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How firm is the Highgrove Solar Ortho Dream mattress?
It's listed as extra firm, sitting at the very firm end of the scale thanks to its open coil spring system. That suits back and front sleepers who want solid support, although lightweight side sleepers may find it too unyielding for their hips and shoulders.
Is the Highgrove Solar Ortho Dream good for back pain?
Across owner reviews on the Archers Sleep Centre page, many customers say it provides good support for back pain. No mattress can promise that for everyone, but its extra firm feel is the sort typically chosen by people who prefer firmer support.
Can you flip the Highgrove Solar Ortho Dream mattress?
Yes, the retailer listing states it's double-sided, so you can flip it as well as rotate it. Turning a mattress regularly helps the fillings settle evenly, which should extend its usable life.
Does the Highgrove Solar Ortho Dream come with a trial or warranty?
Archers Sleep Centre lists a 60-night comfort guarantee and a 5-year warranty with this mattress. These are the retailer's own terms rather than manufacturer offers, so check what applies if you buy elsewhere.
How deep is the Highgrove Solar Ortho Dream mattress?
It's 27cm deep, a reasonable depth for an open coil mattress at this price. Standard fitted sheets should fit without any trouble.
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