Sealy Sterling Enhance King Size Mattress
The Sealy Sterling Enhance Mattress pairs 1,000 pocket springs with a Geltex comfort layer and a firm feel, which means you get steady support with some pressure relief at the hips and shoulders.
- Firm feel for back sleepers
- Geltex layer eases pressure
- Edges that stay supportive
£634.50
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Sealy Sterling Enhance Mattress
More available sizes
Mattress details
Mattress
Sealy Sterling Enhance Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Depth (cm)
26
Layers
2
Layer Details
Geltex
Sealy's deepest layer of Geltex, aimed at pressure relief where your body needs it most. It adds cushioning over the springs, and Sealy says it's breathable and temperature-regulating.
Pocket springs
1,000 pocket springs that work independently and offer a gentle level of support. That lets the mattress respond to your body shape and create a more personalised feel.
Layer details from readyforbed.co.uk product page, October 2026.
Key benefits
- More room for each of you: At 75cm per person, you get 7.5cm more each than on a UK double, which means fewer elbows in the night and space to turn over without nudging your partner.
- Length for a tall partner: The UK king is 200cm long, 10cm more than a UK double, so someone over six foot can stretch out without their feet reaching the end.
- Less disturbance on different schedules: The 1,000 pocket springs move independently, and with the extra width between you, an early riser should be a little less likely to wake the other.
- Steadier edges for getting up: EdgeGuard foam supports the sides, which helps if you sit on the edge before standing, useful during pregnancy or while recovering from an injury.
- Straightforward bedding: Standard UK king sheets fit, and a 230 x 220cm king duvet gives both of you enough to tuck in on cold nights.
This size suits you if...
You share the bed every night and keep bumping into each other on a UK double, one of you is over six foot and needs the extra length, or you like a firm feel and want room to move without waking your partner.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m, or you prefer a soft or medium feel. Sealy only makes this mattress in a UK king, so there's no other size of it to choose.
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FAQ's
Will a UK king Sealy Sterling Enhance fit in my bedroom?
We suggest at least 2.7m x 2.9m, and around 3.2m x 3.2m if you want comfortable walking room. New build master bedrooms often feel smaller once fitted wardrobes go in, so measure from the open wardrobe doors rather than the walls, then compare the retailers listed on this page.
Is the Sealy Sterling Enhance UK king long enough for someone over 6ft?
At 200cm (6ft 6in), the UK king is 10cm longer than a UK double. For a partner over six foot, that extra length is often more noticeable than the width, leaving room for a pillow at the top without your feet reaching the end.
How much space do two people get on a UK king Sealy Sterling Enhance?
Each of you gets 75cm, which is 7.5cm more than a UK double. If a dog sleeps on the bed most nights, that margin disappears quickly, and a UK super king isn't available in this model.
Will I feel my partner moving on the Sealy Sterling Enhance in a king size?
The pocket springs move independently, and the UK king's extra width puts a little more distance between you. If one of you gets up hours before the other, that combination should help, although no mattress stops movement entirely.
What duvet and sheets fit a UK king Sealy Sterling Enhance?
A 230 x 220cm king duvet fits, along with standard UK king fitted sheets. The mattress is 26cm deep, so check that the fitted sheet's pocket depth covers it before you buy.