Sealy Oasis Hybrid Geltex Mattress
Mattress
Sealy Oasis Hybrid Geltex Mattress
Size
Firmness
Construction
Depth (cm)
32
Layers
3
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.
- Fits most UK bedrooms: We suggest a room of at least 2.6m x 2.8m, which most doubles rooms in typical UK homes can meet with space for bedside tables on both sides.
- Motion isolation where it counts: With 67.5cm each for two people sharing, the independently moving pocket springs help keep one sleeper's tossing from travelling across the mattress.
- Soft feel suits close sharing: The Geltex layer, a gel-infused foam, cushions shoulders and hips, which side sleepers in particular will feel on a shared surface.
- Easy to dress: Standard double sheets and a 200 x 200cm duvet fit, both stocked everywhere, so there is no hunting for odd bedding sizes.
- Breathable for two: Two bodies generate more heat than one, and the gel-infused foam and Tencel fibres help disperse it rather than trap it.
This size suits you if...
You share the bed every night and your room sits around the typical UK double size, or you sleep alone and want space to stretch out, perhaps with a dog or cat claiming a corner. It also suits a guest room that hosts visiting couples, since the 135 x 190cm footprint leaves space for a wardrobe and drawers alongside the bed.
Consider another size if...
You and your partner both like to spread out, or one of you is tall, since 67.5cm each can feel snug. We'd recommend the UK king instead: 15cm wider, 10cm longer, and it needs a room of at least 2.7m x 2.9m.
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Is the Sealy Oasis Hybrid Geltex UK double big enough for a couple?
For most couples, yes. You get 67.5cm of width each, and the 1400 individually pocketed springs limit how much movement crosses the bed. That said, the soft, sink-in feel means partners naturally settle towards their own dips, so restless or broad-shouldered pairs may prefer the UK king, which is 15cm wider and 10cm longer.
What room size do I need for the Sealy Oasis Hybrid Geltex in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m being the comfortable norm. That allows a bedside table on both sides and room to walk around the bed. In a second bedroom or a first flat, the 135 x 190cm footprint usually still leaves space for a wardrobe and a chest of drawers.
Will the UK double Sealy Oasis fit up narrow stairs?
At 135 x 190cm and 32cm deep, it is a manageable size for most homes, though the turning stairs in older terraces and tight new build landings can be awkward with any mattress this deep. Measure your narrowest point before ordering, and check the retailer's delivery guidance, as Sealy doesn't publish handling advice for stairwells.
Is the Sealy Oasis Hybrid Geltex double good for a guest room?
It suits one well. The UK double comfortably hosts visiting couples, and the soft, cushioned feel is a forgiving middle ground when you can't ask every guest their preference. It carries the Allergy UK Seal of Approval and is hypoallergenic too, a sensible trait for a bed different people use. Just check the room meets our suggested 2.6m x 2.8m.
Should I get the Sealy Oasis in a UK double or a UK king?
Choose the UK double if your room is around our suggested 2.6m x 2.8m minimum, or you want the more compact footprint. Choose the UK king if you have at least 2.7m x 2.9m and want extra space: it is 15cm wider and 10cm longer. Compare the retailers listed on this page for current pricing on both.