Sealy Oasis Hybrid Geltex Mattress
The Sealy Oasis Hybrid Geltex is a soft hybrid mattress, which means you get cushioned comfort layers over 1400 individually pocketed springs.
- Soft feel suits side sleepers
- Geltex helps disperse heat
- Allergy UK Seal of Approval
£979
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The Sealy Oasis Hybrid Geltex uses Geltex, a gel-infused foam, alongside Tencel fibres for a plush, breathable feel, while the springs move independently to support you and ease pressure points. It's 32cm deep, comes in four UK sizes and sits at the pricier end, but the depth and the certifications, including the Allergy UK Seal of Approval, go some way to justifying it. It's rated Soft, so it suits sleepers who want a gentler, sink-in feel rather than a firm surface.
Mattress specifications
Firmness
Soft
Type
Hybrid
Depth (cm)
32
Number of Layers
3
Trial Period (nights)
Warranty (years)
5
Price Range
£979 to £1,699
Best Sleeping Position(s)
Side Sleeping
Certifications
BS 7177, Allergy UK
Assessed from the specification published by MattressNextDay, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
If you sleep on your side, or you simply prefer a softer surface, this mattress is built for you. The Geltex layer is gel-infused foam, which means it cushions your shoulders and hips while helping to disperse heat, and the Tencel fibres add a soft, eco-friendly touch. Underneath, 1400 pocket springs work independently, so movement on one side is less likely to disturb the other. It carries the Allergy UK Seal of Approval and is hypoallergenic, a genuine plus for allergy sufferers, and it's vegan friendly and made by an NBF-approved manufacturer. MattressNextDay lists free next day delivery to mainland UK, though some addresses may incur a small fee.
Key features & layer details
Cover
A soft-touch cover with a smooth, silky feel. It's gentle against the skin from the moment you lie down.
Comfort Fillings
Cushioning layers including Geltex, a gel-infused foam, and Tencel fibres, which are soft and eco-friendly. Together they create the mattress's soft, comfortable feel.
Support System
1400 individually pocketed springs that work independently of one another. This gives you tailored support and pressure relief where your body needs it.
Layer details from mattressnextday.co.uk product page, September 2026.
Best suited for?
Side sleepers
The Geltex layer is a gel-infused foam that cushions the shoulders and hips, which means a softer, sink-in feel suited to sleeping on your side.
Allergy sufferers
It carries the Allergy UK Seal of Approval and is hypoallergenic, so it gives a reassuring choice for anyone who wants a cleaner sleep surface.
Warm sleepers
Gel-infused Geltex foam helps to disperse heat, and the Tencel fibres add a breathable feel, which means less trapped warmth through the night.
Couples
With 1400 pocket springs working independently, movement on one side is less likely to disturb the other, so a restless partner is less of a problem.
Eco-conscious buyers
Soft, eco-friendly Tencel fibres sit in the comfort layers and the mattress is vegan friendly, which suits anyone wanting gentler materials in their bed.
This mattress is rated Soft, so it's unlikely to suit dedicated back or front sleepers who need a firmer surface, and heavier sleepers may find they sink in further than is comfortable. If you want a budget option, the starting price will feel steep. No trial period is stated on the listing either.
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 Oasis Hybrid Geltex Mattress
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Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Is the Sealy Oasis Hybrid Geltex mattress soft or firm?
It's rated Soft, which means a gentler, more cushioned feel. That suits side sleepers and lighter builds well, although those who prefer a firmer, more supportive surface may find it a little too forgiving.
How many springs does the Sealy Oasis Hybrid Geltex have?
It has 1400 individually pocketed springs. Because each spring moves independently, the mattress can contour to your body and reduce the amount of movement you feel from a partner during the night.
Does the Sealy Oasis Hybrid Geltex come with a guarantee?
The MattressNextDay listing states a Sealy 5 Year Guarantee. It's sensible to confirm the guarantee terms with whichever retailer you buy from before ordering.
Is the Sealy Oasis Hybrid Geltex good for allergy sufferers?
Yes, it carries the Allergy UK Seal of Approval and is listed as hypoallergenic, which makes it a reassuring choice if dust or allergens tend to disturb your sleep. It's also vegan friendly.
How much does the Sealy Oasis Hybrid Geltex cost?
It depends on the size you choose, and the price table on this page shows the current price for each size. It comes in UK Single, Double, King and Super King. It has a premium price, but you're getting a 32cm-deep hybrid with Geltex foam and pocket springs.
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