Sealy Advantage Austen Latex Mattress
The Sealy Advantage Austen is a latex hybrid mattress that pairs a plush latex comfort layer with PostureTech Core Support Springs, which means you get a responsive, body-shaping surface over sturdy full-body support.
- Latex contours without the sink
- Firmer edges, less roll-off feeling
- Allergen-fighting quilted cover
£1,269
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The Sealy Advantage Austen is described by Sealy as medium to firm, so it suits back and stomach sleepers more than lightweight side sleepers. At 28cm deep with EdgeGuard technology for extra stability at the sides, it's a substantial build, handcrafted in the UK and approved by Allergy UK. It's currently available in UK Super King only, and it's a serious spend, though latex hybrids at this depth rarely come cheap.
Mattress specifications
Firmness
Medium Firm
Type
Hybrid
Depth (cm)
28
Number of Layers
4
Trial Period (nights)
100
Warranty (years)
5
Price Range
£1,269
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
BS 7177, Allergy UK
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?
Latex is the draw here. It adapts to your body shape without the sink-in feel of memory foam, which means you can change position easily through the night. Beneath it sits a layer of Sealy Firm and Extra Firm foam, then PostureTech springs with varied tension for support and pressure relief. The quilted cover has a ProShield® treatment that fights allergens, and the mattress is Allergy UK approved, useful if dust mites are a concern. Mattress Online offers a 100-night trial (a mattress protector purchase from them is required) and free delivery to most locations, with next-day weekday delivery available. Old mattress removal costs extra.
Key features & layer details
Quilted cover
A soft, cosy quilted cover with ProShield® treatment, which fights against allergens. That makes it a sensible pick if you're prone to reacting to dust mites.
Latex comfort layer
A plush, adaptive material that responds to your body shape for individualised comfort. In practice this means pressure relief with a springy, easy-to-move-on feel rather than a slow sink.
Foam layer
An additional layer of Sealy Firm and Extra Firm foam. This sits between the latex and the springs, adding a firmer transitional feel beneath the softer surface.
PostureTech Core Support Springs
A spring design using unique shapes and varied tension to provide full-body support and pressure relief. EdgeGuard technology firms up the perimeter, which means less roll-off feeling when you sleep near the edge.
Layer details from mattressonline.co.uk product page, September 2026.
Best suited for?
Back sleepers
The medium to firm feel and PostureTech springs with varied tension give full-body support, which suits sleeping on your back with the spine well held.
Front sleepers
A firmer foam layer sits under the latex, which means hips are less likely to sink too far when you lie on your stomach.
Allergy sufferers
Allergy UK approval and a quilted cover with ProShield® treatment, which fights allergens, make this a sensible choice if dust mites cause you trouble.
Combination sleepers
Latex gives a springy, easy-to-move-on feel rather than a slow sink, which means changing position through the night takes little effort.
Couples
EdgeGuard firms up the perimeter, which means less roll-off feeling near the edge, and the Super King size gives two people plenty of room.
If you're a lightweight side sleeper, or you have hip or shoulder sensitivity, the medium to firm feel may prove a little unforgiving. It's also only available in UK Super King, so it's a non-starter for smaller beds, and the starting price won't suit tighter budgets.
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 Advantage Austen Latex Mattress
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FAQ's
How firm is the Sealy Advantage Austen latex mattress?
Sealy describes it as medium to firm. That should suit most back and stomach sleepers, although lightweight side sleepers may find it a little too firm for comfortable pressure relief at the hips and shoulders.
Does the Sealy Advantage Austen come with a sleep trial?
Mattress Online offers a 100-night trial, but it requires you to buy a mattress protector from them at the same time. This is the retailer's own offer, so terms may differ if you buy elsewhere.
What guarantee does the Sealy Advantage Austen have?
The mattressonline.co.uk listing states a 5-year guarantee. As this appears on a retailer page rather than Sealy's own site, it's sensible to confirm the guarantee terms with whichever retailer you buy from.
How deep is the Sealy Advantage Austen mattress?
It's 28cm deep, a fairly substantial build. Worth checking your fitted sheets accommodate that depth, as some standard sheets can struggle beyond about the mid-twenties in centimetres.
Is the Sealy Advantage Austen good for allergy sufferers?
It's a reasonable choice. The mattress is approved by Allergy UK, and the quilted cover carries a ProShield® treatment that fights against allergens. Latex itself is a resilient material, though if you have a latex sensitivity you should take advice before buying.
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