Firmness
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)
Certifications
Assessed from the specification published by MattressNextDay, captured September 2026, and from regular price comparison across our UK retail partners.
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 & what's inside
- 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.
Who's it NOT for?
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 £979 starting price will feel steep. No trial period is stated on the listing either.
Sealy Oasis Hybrid Geltex Mattress
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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?
Prices range from £979 to £1,699 depending on size, with UK Single, Double, King and Super King available. That's a premium price, but you're getting a 32cm-deep hybrid with Geltex foam and pocket springs.
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