Sealy Ortho Support Mattress
The Sealy Ortho Support Mattress is available in five UK sizes, from Single up to Super King.
- Extra-firm feel for a flat surface
- Reinforced edges for more usable space
- Hypoallergenic fibre fillings
£509
Get the lowest price we've found
Verified construction and firmness details for the Sealy Ortho Support Mattress aren't published yet, so check the specifics with the retailer before you buy. If you're comparing Sealy options, check the retailer's listing for the specifics before you commit.
Mattress specifications
Firmness
Extra Firm
Type
Open Coil Spring
Depth (cm)
Number of Layers
3
Trial Period (nights)
Warranty (years)
Price Range
£509 to £828
Best Sleeping Position(s)
Stomach Sleeping
Certifications
Assessed from Sealy's product page, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Sealy is a long-established name, and this model sits at a mid-range price point. The size spread is a genuine plus: UK Single, Small Double, Double, King and Super King are all listed, which means most bed frames are catered for. We can't yet confirm the materials, firmness or spring construction from a verified brand source, so we'd suggest confirming those details with the retailer, particularly if you have specific support needs.
Key features & layer details
PostureTech 2.0 spring core
Sealy's PostureTech 2.0 smart spring core, made up of pocket springs individually encapsulated in fabric, forms the base of the mattress. It gives the firm support you would expect from an extra-firm build.
EdgeGuard surround
EdgeGuard surrounds the spring system and reinforces the sides and edges. That means you get more usable sleep surface, so you can sleep or sit nearer the edge without it feeling weak.
OptiForm extra-firm foam
A double layer of OptiForm extra-firm foam sits on top of the springs and gently cushions and adapts to your body. Expect a firm, fairly flat feel rather than a deep sink-in one.
Layer details from mattressman.co.uk product page, October 2026.
Best suited for?
Couples
Double, King and Super King sizes are all listed, which means two people can pick a width that gives each of them proper room.
Guest rooms
The size range runs from UK Single to Super King, so it is easy to match the mattress to a spare room's bed frame.
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 Ortho Support Mattress
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FAQ's
How much does the Sealy Ortho Support Mattress cost?
It depends on the size you choose, and the price table on this page shows the current price for each size.
What sizes does the Sealy Ortho Support Mattress come in?
It's listed in five UK sizes: Single, Small Double, Double, King and Super King, so most standard bed frames are covered.
Where can I buy the Sealy Ortho Support Mattress?
Compare the retailers listed in the price table on this page for the current prices. It's worth checking current stock and delivery terms directly with the retailer before ordering.
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