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.
- 90cm each for two sharing: Each of you gets 90cm of width, which means a partner who turns over frequently becomes something you barely register rather than something that wakes you.
- Space absorbs the soft feel: A soft mattress lets you settle in, and at this width one sleeper sinking into the Geltex layer is far less likely to pull the other towards them.
- Room for children and pets: If little ones wander in at 3am, or a large dog treats the bed as theirs, 180cm of width means the adults still get a fair share.
- Pocket springs plus distance: The 1400 individual springs already limit motion transfer, and the extra 30cm over a UK king adds physical separation on top, a genuinely effective combination for light sleepers.
- Fills a large master properly: In a big period bedroom or a generous new build master, a UK king can look lost against the wall; this size sits in proportion.
This size suits you if...
You share the bed every night and one of you is a restless sleeper, because at this size distance does what no comfort layer can. Or your children or pets regularly join you and a UK king has started to feel crowded. Or you have a large master bedroom, at least 3m x 2.9m by our guidance, and want the bed to match the room.
Consider another size if...
Your bedroom is under our suggested 3m x 2.9m minimum, or you'd struggle to walk round the bed once it's in. We'd recommend the UK king instead: it's 30cm narrower, the same length, and we suggest at least 2.7m x 2.9m for it.
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What size room do I need for the Sealy Oasis Hybrid Geltex UK super king?
We suggest a room of at least 3m x 2.9m, with around 3.5m x 3.2m feeling comfortable. That's our own guidance, not Sealy's, and it allows for bedside tables and space to move around the bed. Measure the room first: a mattress this size dominates anything smaller, however good it feels to lie on.
Is the UK super king worth it over the UK king for this mattress?
If a restless partner is your problem, yes. The UK super king is 30cm wider than the UK king and the same length, giving you 90cm each for two people sharing. On a soft mattress like this one, that extra separation matters, because sink-in comfort layers feel best when you're not competing for the middle.
Is the Sealy Oasis Hybrid Geltex super king big enough for co-sleeping with children?
At 180 x 200cm it's the most practical standard size for it. When a child climbs in during the night, two adults can still each keep a reasonable stretch of mattress, and the 1400 pocket springs limit how much a small wriggler disturbs everyone else. It won't feel roomy with three, but it stays workable.
Will a super king mattress get up my stairs?
This is the size where stairs bite. The Sealy Oasis Hybrid Geltex is 32cm deep and, at 180 x 200cm, it doesn't fold or flex much on a tight landing turn. Measure your stairwell, landing and door swing before ordering, and check the retailer's delivery access policy if your route upstairs is narrow.
Where can I buy the Sealy Oasis Hybrid Geltex in a UK super king?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so it's a quicker check than visiting each site yourself. Availability in the UK super king can differ from the smaller sizes, so confirm stock on the retailer's page before you commit.