Firmness
Type
Open Coil Spring
Depth (cm)
25
Number of Layers
3
Trial Period (nights)
Warranty (years)
5
Price Range
£171 to £172
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.
The main draw is straightforward firm support without a foam-heavy build. The open coil unit with its rod edge wire gives a stable, supportive feel across the whole surface, and the hand tufting keeps the fillings anchored so they are less likely to shift over time. The Tencel treated, hypo-allergenic fillings help with moisture and are a reassuring touch if you're sensitive to allergens. At £171 to £172 for the EU Single it's honest value rather than luxury, and that's fine: you're paying for a sturdy traditional construction, not memory foam layers. Archers Sleep Centre lists a 5 year warranty, described as a 1 year guarantee plus a 4 year manufacturing warranty.
Key Features & what's inside
- Cover. A durable, hand tufted Belgian damask cover with stretch knit fabric. The tufting holds the fillings in place, which means the surface stays even rather than developing lumps.
- Fillings. Layers of hypo-allergenic white fibre fillings with Tencel eucalyptus treated fibres. In practice that means a clean-feeling, breathable comfort layer that suits allergy-prone sleepers.
- Spring System. A sturdy open coil interior of hourglass shaped springs connected into a single unit by a spiral helical wire, with a thick rod edge wire around the perimeter. The connected springs give a firm, uniform feel and the edge wire keeps the sides supportive.
Layer details from archerssleepcentre.co.uk product page, September 2026.
Who's it NOT for?
This is an extra firm mattress, so lightweight side sleepers will likely find it too hard on the shoulders and hips. Because the open coil springs are connected into one unit, couples may notice more movement transfer than with pocket springs, and there are no memory foam layers for a contouring, sink-in feel.
Highgrove Solar Ortho Dream Extra Long Mattress
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How firm is the Highgrove Solar Ortho Dream mattress?
It's rated extra firm, and owner reviews largely back that up, praising the firmness and back support. That said, a few reviewers found it a little softer than they expected for an extra firm rating, so if you need the absolute hardest surface available, temper expectations slightly.
How deep is the Highgrove Solar Ortho Dream Extra Long mattress?
The Archers Sleep Centre listing is inconsistent here: the description says 25cm while the specifications table and dimensions show 27cm. Either way it's a mid-depth mattress, so standard fitted sheets should work, but check with the retailer if the exact depth matters to you.
Does the Highgrove Solar Ortho Dream come with a guarantee?
Archers Sleep Centre lists a 5 year warranty, made up of a 1 year guarantee plus a 4 year manufacturing warranty. As this appears on a retailer's listing rather than the brand's own site, confirm the exact terms with whichever retailer you buy from.
What sizes does the Highgrove Solar Ortho Dream Extra Long come in?
It's currently listed in EU Single only, priced from £171.89. It's also a made to order product, so allow for that when planning delivery. If you need a UK standard size or a double, this particular model won't suit.
Is the Highgrove Solar Ortho Dream good for allergy sufferers?
It should help. The fillings are hypo-allergenic white fibre with Tencel eucalyptus treated fibres, which resist the conditions allergens thrive in, and there's no wool or other animal-derived filling listed. It's a sensible pick if dust sensitivity is a concern, although no mattress can eliminate allergens entirely.
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