Highgrove Solar Supreme Extra Long Mattress
The Highgrove Solar Supreme Extra Long is an open coil mattress in an EU Single size, which means it's a little longer than a standard UK single, useful if you're taller or buying for a European bed frame.
- Extra-long EU Single size
- Medium-firm for back & stomach sleepers
- Tencel keeps you drier & cooler
£154.77
Get the lowest price we've found
At 25cm deep with a Medium to Firm feel, the Highgrove Solar Supreme Extra Long uses white fibre fillings under a stretch knit cover, with Tencel fibres to help heat and moisture move away from you. It sits firmly at the budget end of the market, and it shows its value best as a spare room or guest bed upgrade, or a sensible buy for a growing teenager who has outgrown a standard single.
Mattress specifications
Firmness
Medium Firm
Type
Open Coil Spring
Depth (cm)
25
Number of Layers
5
Trial Period (nights)
Warranty (years)
5
Price Range
£154 to £155
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
Assessed from the specification published by Archers Sleepcentre, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The main draw here is fit: EU Single sizing is hard to find, and this gives you that extra length without a special-order price. The Medium to Firm feel suits back and stomach sleepers who want a supportive, traditional sprung surface rather than the sink of memory foam. Tencel in the sleep surface helps with heat flow, so warmer sleepers should find it a touch more breathable than a basic quilted mattress. A wire edge border stiffens the perimeter, which means you can sit on the edge or spread out without the sides collapsing early. It's good value, provided you accept open coil rather than pocket springs.
Key features & layer details
Stretch Knit Fabric
A soft, pliable cover that lets the fillings beneath contour to your body shape. It flexes rather than pulling taut, so you feel more of the comfort layers.
Quilted Finish with White Fibre Fillings
The outer fabric is stitched to the surface fillings, giving a flat, even sleeping surface. The white fibre fillings are lightweight and high loft, hypoallergenic, and hold their shape well over time.
Tencel
Eucalyptus treated fibres that improve heat flow and move moisture away from you. In practice, this helps keep the sleep surface drier and cooler through the night.
Open Coil Springs
An interconnected system of hourglass shaped springs set in rows from head to toe, joined by spiral wires. It's a durable, traditional construction, though movement transfers across the bed more than it would with pocket springs.
Wire Edge Border
A thick rod-edge wire attached to the perimeter rows of springs. This resists border breakdown and gives usable support right to the edge of the mattress.
Layer details from archerssleepcentre.co.uk product page, September 2026.
Best suited for?
Guest rooms
The copy points to a spare room or guest bed upgrade, and the traditional sprung feel with a wire edge suits occasional visitors well.
Teenagers
Extra Long EU Single sizing gives a growing teenager who has outgrown a standard single the added length without a special-order price.
Back sleepers
A Medium to Firm feel gives a supportive, traditional sprung surface, rather than the sink of memory foam, which suits those lying on their backs.
Front sleepers
The firmer, flat quilted surface keeps your middle from sinking in, which is what stomach sleepers usually want from a sprung mattress.
Warm sleepers
Tencel fibres in the sleep surface help heat and moisture move away from you, so it should feel a touch more breathable than a basic quilted mattress.
If you share a bed, the size rules it out, and open coil springs transfer movement, so restless sleepers may notice partner disturbance on larger models of this type. Lightweight side sleepers could find Medium to Firm a little unforgiving. And if you want deep pressure relief, look at pocket sprung or foam hybrids instead.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Highgrove Solar Supreme Extra Long Mattress
Select a comparison article below or choose to compare this mattress side by side with up to 2 other mattresses.
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
How firm is the Highgrove Solar Supreme Extra Long mattress?
It's described as Medium to Firm, which suits most back and stomach sleepers. Some owners in the reviews on Archers Sleep Centre note the firmness varied from their expectations, so if you're a lightweight side sleeper it may feel slightly firmer than you'd like.
What size is the Highgrove Solar Supreme Extra Long?
It's available in EU Single only, which is longer than a standard UK single. That makes it a good fit for European bed frames or taller sleepers, but check your frame's dimensions before ordering, as it won't sit properly in a standard UK single bedstead.
Does the Highgrove Solar Supreme come with a guarantee?
Archers Sleep Centre's listing states a 5 year warranty, made up of a 1 year guarantee plus a 4 year manufacturing warranty. These are terms shown on that retailer's page rather than a brand-wide promise, so confirm cover with whichever retailer you buy from.
Is the Highgrove Solar Supreme good for hot sleepers?
It should help. The mattress includes Tencel, eucalyptus treated fibres that improve heat flow and moisture dissipation, and the open coil interior allows air to move more freely than solid foam. It won't feel actively cool, but warm sleepers should find it reasonably breathable.
How much does the Highgrove Solar Supreme Extra Long cost?
It comes in EU Single only, and the price table on this page shows the current price. It sits in budget territory, and the trade-off is a traditional open coil construction rather than pocket springs. Note it's listed as made to order, so allow for that when planning delivery.
Couldn't find an answer to your question? Send us a message