Sealy Elevate Ultra Daito Super King Mattress
The Sealy Elevate Ultra Daito Mattress pairs a MemoryFlex comfort layer with a firm overall feel, which means you get pressure relief on top of firm, steady support underneath.
- Firm, supportive feel
- Eases pressure at hips & lower back
- Cool-to-touch cover
£2,399
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Sealy Elevate Ultra Daito Mattress
More available sizes
Mattress details
Mattress
Sealy Elevate Ultra Daito Mattress
Size
Firmness
Firm
Construction
Foam
Memory Foam
Open Coil Spring
Depth (cm)
31
Layers
3
Layer Details
Sealy medium foam
A top layer of Sealy medium foam, described as soft yet supportive. It takes the edge off the firm rating so the surface feels a little more welcoming when you lie down.
MemoryFlex comfort layer
A full layer of MemoryFlex that adapts to your body shape. It gives pressure relief, so your shoulders and hips are cushioned rather than pushed back against.
MemorySense ComfortCore
A core that focuses on heavier areas like the hips and lower back. That means support is tailored to where your body needs it most.
Layer details from crushedvelvetbedstore.co.uk product page, November 2026.
Key benefits
- A full 90cm each: Two sharers get 90cm apiece, which means a partner who turns over all night is far enough away that you're less likely to wake with them.
- Room for small visitors: When a child pads in after a bad dream, a UK super king leaves both adults with usable space instead of a thin strip each side.
- Firm support across the whole surface: The firm feel runs edge to edge, so a dog stretched out across the foot of the bed or a child in the middle won't leave you lying in a dip.
- 15cm more each than a UK king: Sizing up from the UK king adds 30cm of width at the same length, which works out at 15cm more per person for two sharers.
- Fills a large room properly: In a big master bedroom or a high-ceilinged period room, a UK king can look a little lost, while the UK super king suits the scale.
This size suits you if...
You share the bed every night with someone who moves a lot, your children or pets regularly end up sleeping with you, or you have a large main bedroom where a smaller bed would look undersized and you want a firm surface with room to spread out.
Consider another size if...
Your bedroom is under our suggested 3m x 2.9m, or the stairs and landing are tight. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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FAQ's
Is a Sealy Elevate Ultra Daito super king big enough for two adults and a child?
For occasional night visits, yes. Two adults start with 90cm each, so a small child in the middle still leaves both of you a reasonable share. If a child sleeps with you most nights, the extra width matters more as they grow, and the firm memory foam keeps the middle of the bed supportive rather than sagging.
How much wider is the super king than the king Sealy Daito?
The UK super king is 30cm wider than the UK king, and both are the same length. For two people sharing, that means 15cm more each: the UK king gives 75cm per person, while the UK super king gives 90cm. If length is your issue, sizing up won't help.
What size bedroom do I need for a super king mattress?
We suggest at least 3m x 2.9m, although around 3.5m x 3.2m feels more comfortable once you add bedside tables and space to walk around. In a loft conversion, measure where the ceiling slopes first, because the sloped walls usually decide where a bed this wide can sit.
Will a bigger bed help if my partner is a restless sleeper?
Distance helps more than most people expect. A UK super king gives each of you 90cm, compared with 67.5cm each on a UK double, so that's 22.5cm more space between you and someone who kicks or turns constantly. Yes, you'll still share one mattress, but the extra gap makes disturbance much easier to sleep through.
What bedding fits a super king mattress?
You'll need super king fitted sheets and a 260 x 220cm duvet. Bedding at this size is pricier and harder to find in-store than king bedding, so it's sensible to budget for it alongside the mattress. With a 31cm depth, look for fitted sheets with deep pockets so the corners stay put.