Hypnos Alcester Ortho Extra Mattress
The Hypnos Alcester Ortho Extra is a firm pocket spring mattress, handcrafted in the UK with 1,200 ReActivePro 6-turn pocket springs.
- Firm support for back & front sleepers
- Wicks moisture to keep you cool
- Flip & rotate for even wear
£1,019
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The Hypnos Alcester Ortho Extra's fillings pair breathable cotton with Solotex, a fibre made from recycled plastic that cuddles body contours. At 27cm deep, it comes in eight sizes from UK Single up to Emperor, including two EU sizes. It's a considered choice if you want proper firm support from a National Bed Federation approved brand, although lightweight side sleepers may find it a little too firm.
Mattress specifications
Firmness
Firm
Type
Pocket Spring
Depth (cm)
27
Number of Layers
4
Trial Period (nights)
100
Warranty (years)
10
Price Range
£1,019 to £1,999
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
BS 7177
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
This mattress suits you if you sleep on your back or front and want firm, orthopaedic-style support without heat build-up. The damask cover doesn't retain heat and the cotton layer wicks away moisture, so if you're a hot sleeper, that combination should help. It can be rotated and flipped for even wear, which many owners mention, and that's rarer than it used to be. Yes, it's a real spend, but you're getting handcrafted UK construction and eco-conscious Solotex fillings. Mattress Online offers a 10-year guarantee and a 100-night trial, though the trial requires buying a mattress protector from them.
Key features & layer details
Damask cover
A finely woven, durable fabric that feels soft to the touch. It doesn't retain heat, which means it stays cooler against you through the night.
Cotton
Breathable cotton fibres that wick away moisture. In practice that keeps you dry and cool rather than clammy.
Solotex™
A filling engineered from recycled plastic, so it's an eco-friendlier choice. It's extremely durable and cuddles body contours for a slightly softer feel over the firm springs.
Pocket Springs
1,200 ReActivePro 6-turn pocket springs with tighter spring resistance. That means a more supportive surface that still adapts to your unique shape, weight and movement.
Layer details from mattressonline.co.uk product page, September 2026.
Best suited for?
Back sleepers
The firm feel and 1,200 pocket springs with tighter resistance give a supportive surface that keeps you level while still adapting to your shape.
Front sleepers
Firm, orthopaedic-style support from the tighter pocket springs helps stop your middle sinking too far, which suits lying on your front.
Warm sleepers
A damask cover that doesn't retain heat and a cotton layer that wicks away moisture should keep you cooler and drier through the night.
Eco-conscious buyers
Solotex filling is made from recycled plastic, and the mattress is handcrafted in the UK, so it suits anyone wanting a greener choice.
European bed frames
Two of the eight sizes are EU sizes, which means you can get a proper fit if your frame follows European measurements.
This is a firm mattress, so lightweight side sleepers may find it presses uncomfortably on shoulders and hips rather than letting them sink in. If you prefer a plush, hugging feel, or want memory foam contouring, look elsewhere.
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.
Hypnos Alcester Ortho Extra Mattress
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FAQ's
Is the Hypnos Alcester Ortho Extra a firm mattress?
Yes, it's rated firm. The 1,200 ReActivePro 6-turn pocket springs use tighter spring resistance for a more supportive surface, softened slightly by cotton and Solotex fillings. It suits back and front sleepers best, although lighter side sleepers may find it a little unforgiving.
Does the Hypnos Alcester Ortho Extra come with a trial and guarantee?
Mattress Online lists a 100-night trial and a 10-year guarantee. Both are the retailer's own offers rather than Hypnos manufacturer terms, and the trial requires you to buy a mattress protector from Mattress Online at the same time.
What sizes does the Hypnos Alcester Ortho Extra come in?
Eight sizes: UK Single, Small Double, Double, King, Super King and Emperor, plus EU Double and EU King. It's 27cm deep across all sizes.
Can you flip the Hypnos Alcester Ortho Extra mattress?
Owner reviews on Mattress Online highlight that it can be rotated and flipped for even wear. That's a genuine plus for longevity, as regular turning helps the fillings settle evenly rather than developing dips where you sleep.
What delivery options does Mattress Online offer for this mattress?
Mattress Online offers free delivery to most locations, with next day delivery on weekdays, a weekday of your choice up to 60 days ahead, or weekend slots. Delivery to your front door includes a two-hour time slot. Room delivery and old mattress recycling are both available for an extra charge.
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