Otty Natural Evolve Mattress
The Otty Natural Evolve is a double-sided, medium-firm mattress built around natural materials: wool, silk, cashmere and cotton, with up to 4,500 pocket springs in total.
- Wool, silk & cashmere regulate heat
- Micro springs ease pressure points
- 100-night trial & 10-year guarantee
£799.99
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At 28cm deep and handmade in the UK with a tufted viscose cover, the Otty Natural Evolve feels closer to a traditional mattress than a bed-in-a-box. Because it's fully flippable, wear spreads across both sides, which should help it keep its shape for longer. Otty backs it with a 100-night trial and a 10-year guarantee. It's a considered choice for anyone wanting natural fillings without giving up the pressure relief of pocket springs.
Mattress specifications
Firmness
Medium Firm
Type
Pocket Spring
Depth (cm)
28
Number of Layers
7
Trial Period (nights)
100
Warranty (years)
10
Price Range
£799 to £1,100
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
CertiPUR, BS 7177
Assessed from Otty's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The main draw is the construction. A core pocket spring unit handles support while 1,750 micro pocket springs sit closer to the surface, which means better pressure relief and less motion transfer if you share a bed. Wool, silk and cashmere in the comfort layer regulate temperature naturally, so hot sleepers should fare well here. The mattress is double-sided, rarer these days, and side handles make rotation and flipping manageable. Otty rates it medium-firm, which suits most back and combination sleepers. Free two-person delivery comes as standard, with room-of-choice delivery and old mattress removal available for an extra fee. Certifications include CertiPUR, Europur approval and BS7177 fire testing.
Key features & layer details
Hand-Stitched Tufted Cover
Handmade in the UK from thick viscose, with handles on the sides. That means rotating and flipping this heavy, double-sided mattress is far less of a struggle.
Luxurious Wool, Silk & Cashmere
A blend of wool, silk and cashmere sits just beneath the cover. These fibres breathe and regulate temperature naturally, so the sleep surface feels soft without trapping heat.
Natural Rebound Cotton
A layer of naturally breathable cotton that wicks moisture away. This helps keep the mattress cool and dry over time.
1750 Micro Pocket Springs
Smaller, high-density springs that respond to finer pressure points than a standard spring unit can. You'll feel this as gentler cushioning at shoulders and hips, with less partner disturbance.
Natural Rebound Cotton
A second cotton layer, again breathable and moisture-wicking. It keeps airflow moving between the two spring systems.
Core Pocket Spring Unit
Individually wrapped springs that adapt to your body shape, which means proper spinal alignment and reduced pressure points. This is the mattress's main support engine.
All The Layers Again - Reversed
The whole construction is mirrored on the other side, making the mattress fully flippable. Flipping spreads wear evenly and extends the mattress's lifespan.
Layer details from otty.com product page, September 2026.
Best suited for?
Back sleepers
Otty rates it medium-firm, and the core pocket spring unit gives steady support, which suits lying on your back with the body held level.
Combination sleepers
The medium-firm feel and responsive micro pocket springs make changing position easy, so moving between your back and side shouldn't feel like effort.
Warm sleepers
Wool, silk and cashmere in the comfort layer, plus two breathable cotton layers, regulate temperature and wick moisture, so heat shouldn't build up overnight.
Couples
The 1,750 micro pocket springs sit near the surface and cut motion transfer, which means you're less likely to feel a partner turning over.
Eco-conscious buyers
Natural fillings such as wool, silk, cashmere and cotton, plus a handmade UK build, appeal to anyone who wants fewer synthetic materials in their bed.
If you prefer a soft, sink-in feel, the medium-firm rating may be more than you want, and lightweight side sleepers could find it a little firm. If you prefer memory foam, you won't get that slow, hugging sensation here. A flippable 28cm mattress is also heavy, so if turning it regularly isn't practical for you, a one-sided design may suit better.
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.
Otty Natural Evolve Mattress
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FAQ's
Is the Otty Natural Evolve mattress firm or soft?
Otty describes it as medium-firm. That suits most back and combination sleepers, although lightweight side sleepers may find it slightly too firm for full pressure relief at the shoulder.
Can you flip the Otty Natural Evolve mattress?
Yes. It's a genuinely double-sided design, with the full layer construction mirrored on both sides and handles stitched into the cover to help. Flipping and rotating it regularly spreads wear evenly, which should extend its lifespan.
How many springs does the Otty Natural Evolve have?
Up to 4,500 pocket springs in total. That combines 1,750 micro pocket springs, which handle surface-level pressure relief, with a core pocket spring unit that provides the main support.
Does the Otty Natural Evolve come with a trial and guarantee?
Yes. Otty offers a 100-night trial and a 10-year guarantee. Free two-person delivery is standard, and you can add room-of-choice delivery or old mattress removal at checkout for an extra fee.
What sizes does the Otty Natural Evolve come in?
Seven sizes: UK Single, Small Double, Double, King and Super King, plus EU Double and EU King.
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