Sealy Posturepedic Elevate Blackwood Mattress
The Sealy Posturepedic Elevate Blackwood is a firm mattress built around Sealy's patented AlignSupport coil system, which means you get a supportive, responsive feel rather than the sink-in softness of an all-foam bed.
- Comfort first, then deep support
- Allergy UK endorsed treatment
- Made in Britain, zero-to-landfill
£658
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The Sealy Posturepedic Elevate Blackwood is handmade in Cumbria, and the SmarTex surface fabric is designed to move heat away from your body, which matters if you tend to run warm at night. It's available in UK Single through Super King. It's listed as firm, although Sealy's own page doesn't confirm this for the Blackwood specifically, so it's sensible to check with your retailer before ordering if firmness is a dealbreaker for you.
Mattress specifications
Firmness
Firm
Type
Foam
Depth (cm)
Number of Layers
4
Trial Period (nights)
Warranty (years)
Price Range
£658 to £1,214
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Allergy UK
Assessed from Sealy'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?
If you want firm support with a bit of engineering behind it, this is a strong candidate. The AlignSupport coil responds to your body's contours, giving initial comfort followed by deeper support, and it's twice-tempered for durability. The ProShield natural treatment is endorsed by Allergy UK, a genuine reassurance if dust mites or allergies affect your sleep. It has also earned a Which? Best Buy, an independent endorsement rather than a marketing claim. Made in Britain with a zero-to-landfill policy, it suits buyers who care where their mattress comes from. It's at the pricier end for some budgets, but the construction and certifications go some way to justifying that.
Key features & layer details
SmarTex® surface layer
A smart fabric woven into the surface that disperses heat away from your body. In practice, this means less of that clammy, overheated feeling in the small hours.
Comfort Architecture
A blend of comfort layers and textiles sitting beneath the surface. This is the cushioning you feel first, before the support system takes over.
AlignSupport™ Coil
Sealy's patented coil system, exclusive to Posturepedic, responds to your body's contours with initial comfort followed by deep-down support. The coils are twice-tempered, which means they're heat-treated for long-lasting strength and consistent performance.
BasePlank™ Foundation
A solid base providing structural integrity from corner to corner. It works with the coil system above it to improve both support and airflow through the mattress.
Layer details from sealy.co.uk product page, September 2026.
Best suited for?
Warm sleepers
The SmarTex surface fabric is designed to move heat away from your body, which means less of that clammy, overheated feeling during the night.
Allergy sufferers
The ProShield natural treatment is endorsed by Allergy UK, which gives extra reassurance if dust mites or allergies tend to affect your sleep.
Eco-conscious buyers
Handmade in Cumbria under a zero-to-landfill policy, this mattress suits anyone who cares where their bed comes from and how it is made.
Back sleepers
Firm support from the AlignSupport coil, which responds to your body's contours and then gives deeper support, suits those who lie flat and want a steady feel.
Heavier sleepers
Twice-tempered coils are heat-treated for lasting strength, and the solid BasePlank foundation supports the mattress corner to corner, which suits those who want a firm, durable build.
This is a firm mattress, so lightweight side sleepers may find it doesn't cushion the shoulder and hip enough, leading to pressure points. If you love a soft, enveloping feel, look elsewhere in the Elevate range, which includes plush and medium options. Buyers wanting confirmed trial and delivery terms upfront may also find the available information a little thin.
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.
Sealy Posturepedic Elevate Blackwood Mattress
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FAQ's
Is the Sealy Blackwood mattress firm or soft?
Retailer listings describe it as firm. Sealy's own page notes the Elevate range comes in plush, medium and firm options but doesn't confirm which applies to the Blackwood, so it's worth double-checking with your retailer before you buy.
How much does the Sealy Posturepedic Elevate Blackwood cost?
It depends on the size you choose, and the price table on this page shows the current price for each size. It's available in UK Single, Double, King and Super King.
Does the Sealy Blackwood mattress have a guarantee?
Retailer listings mention a 7 year guarantee, though Sealy's own product page doesn't state guarantee terms. Confirm the guarantee with the retailer you buy from, as terms can differ between shops.
Is the Sealy Blackwood good for allergy sufferers?
It's a reasonable choice. The mattress uses Sealy's ProShield natural treatment, which is endorsed by Allergy UK, an independent endorsement rather than a manufacturer claim.
Where is the Sealy Blackwood mattress made?
It's handmade in Britain, in Cumbria, and Sealy states a zero-to-landfill policy for production. That's a genuine plus if provenance and waste matter to you.
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