Sealy Exquisite Radiance Plush Super King Mattress
The Sealy Exquisite Radiance Plush Mattress combines graphite-infused ClimaLux foam with two layers of mini pocket springs, which means a soft-to-medium feel that sleeps fresher and stays bouncy underneath.
- Cooler, fresher sleep surface
- Soft feel that eases pressure
- Bouncy springs, easy to move on
£5,099
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Sealy Exquisite Radiance Plush Mattress
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Mattress details
Mattress
Sealy Exquisite Radiance Plush Mattress
Size
Firmness
Medium Soft
Construction
Foam
Pocket Spring
Depth (cm)
36
Layers
5
Layer Details
ClimaLux foam
Two 2cm layers of graphite-infused ClimaLux foam. They promote a cooler, fresher sleep surface, which helps if you tend to warm up in bed.
EcoLux ComfortCore foam
A 1cm layer that shapes around the body. It eases built-up pressure, adding to the plush feel.
Mini pocket springs
Two layers of 2000 mini pocket springs that improve airflow and give a bouncy feel. You get responsiveness rather than a slow sink.
EternityFibre
A finishing comfort layer described as highly resilient and durable. It's there to reduce settlement, so the surface should keep its shape for longer.
RestSupport coil core
A core of twice-tempered RestSupport coils that respond to body weight. This gives the support underneath the softer layers above.
Layer details from mattressonline.co.uk product page, October 2026.
Key benefits
- Room for two to spread out: Each sleeper gets 90cm of width, which means a partner who turns over all night is far less likely to wake you.
- Space put to good use: The bouncy mini pocket springs can pass a little movement across the bed, so the generous width helps by keeping a restless sleeper further away.
- Coping with night-time visitors: If a child climbs in after a bad dream or a large dog sleeps at the foot, the UK super king leaves adults with usable space.
- A softer surface across a big area: The Medium Soft feel and graphite-infused foam cover the full 180cm width, which suits side sleepers who want cushioning without feeling too warm.
- Proportioned for a large room: In a spacious master bedroom or period property, a UK super king fills the space comfortably where a UK king can look slightly lost.
This size suits you if...
You share with a partner who fidgets, kicks or gets up in the night, or your bed regularly gains a child or a large dog by morning, and your bedroom measures at least 3m x 2.9m.
Consider another size if...
Your bedroom is smaller than 3m x 2.9m, or you rarely need more than your own half. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m.
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FAQ's
Is the Sealy Exquisite Radiance Plush super king big enough for two adults and a child?
For occasional visits, yes. Two adults get 90cm each in a UK super king, so a small child tucked between you still leaves both of you reasonable space. The Medium Soft surface is forgiving, although a child near the middle will feel a little of the springs' bounce when you move.
What size bedroom do I need for a UK super king Sealy Exquisite Radiance Plush?
We suggest allowing at least 3m x 2.9m for a UK super king. That gives you room to walk round the bed and open drawers. If your room has a sloping ceiling, such as a loft conversion, check which wall gives full headroom over the whole 180cm width before deciding.
Sealy Exquisite Radiance Plush king or super king for a restless partner?
The UK super king is 30cm wider than the UK king and the same length. That gives each of you 15cm more width, which makes a real difference when one partner tosses about on a bouncy pocket spring mattress. If your room fits it, the UK super king is the better choice for a disturbed sleeper.
Will a super king mattress fit up my stairs?
Measure before ordering. This mattress is 180 x 200cm and 36cm deep, and pocket spring mattresses of this size don't bend easily. Check tight landing turns, low ceilings over the stairs and which way the bedroom door swings, as these are the points where a UK super king most often gets stuck.
What bedding fits a Sealy Exquisite Radiance Plush super king?
You'll need UK super king sheets and a 260 x 220cm duvet. At 36cm deep, the mattress is thicker than many, so choose fitted sheets with deep pockets to stop the corners from slipping off. Expect super king bedding to cost a little more than UK king sets.