Sealy Sterling Super King Mattress
The Sealy Sterling is a firm pocket spring mattress, 26cm deep, with a layer of Geltex over the springs to soften the surface a little.
- Firm support with a forgiving top
- Minimises partner disturbance
- Handmade in the UK
£1,049
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Sealy Sterling Mattress
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Mattress details
Mattress
Sealy Sterling Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Depth (cm)
26
Layers
3
Layer Details
Cover
A knitted fabric cover with a smooth quilted surface. It gives the sleeping surface a soft, finished feel before you reach the firmer layers below.
Filling
A layer of Geltex, a gel-infused foam that offers pressure-relieving comfort and breathability. In practice this means gentle cushioning at the surface and better airflow than traditional foam, helpful if you tend to sleep warm.
Springs
The king size contains 1,000 individually pocketed springs delivering firm support and reducing movement transfer. Each spring responds separately, so the mattress contours to your shape and limits partner disturbance.
Layer details from furniturevillage.co.uk product page, September 2026.
Key benefits
- 90cm each for two sharing: Two people each get 90cm of width, which means you can both stretch out without ever touching in the night.
- Independent springs, extra distance: The pocketed springs move individually, and combined with the width of a UK super king a fidgety partner becomes genuinely easy to ignore.
- Firm support across the full width: The firm feel holds consistent edge to edge, useful when children or a large dog treat the middle of the bed as theirs.
- Room for the whole household: At 6ft x 6ft 6in there is space for a child wandering in at 3am without anyone giving up their side.
- A cooler surface at scale: The Geltex layer is designed for breathability, which matters slightly more when three or four bodies share one mattress.
This size suits you if...
You share every night and want the most sleeping space a standard UK size offers, your partner is restless and distance matters more to you than any comfort layer, or children and pets regularly join you and you all still want firm, undisturbed support. Your room should allow at least 3m x 2.9m, and a larger master or period bedroom will carry this size comfortably.
Consider another size if...
Your bedroom is under our suggested 3m x 2.9m minimum, or you sleep alone. We'd recommend the Sealy Sterling in a UK king instead, which is 30cm narrower, the same length, and needs at least 2.7m x 2.9m.
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FAQ's
Is the Sealy Sterling super king good for a restless partner?
Yes, and it is arguably the best size for one. The pocketed springs respond individually, so movement transfers less across the mattress, and the 180cm width gives you 90cm each. That combination means turning, shuffling and early alarms on one side are far less likely to wake the other.
What size room do I need for the Sealy Sterling in a UK super king?
We suggest at least 3m x 2.9m, with around 3.5m x 3.2m feeling more comfortable, and that guidance is ours rather than Sealy's. Measure with bedside tables and door swing in mind. In a loft conversion, check the slope leaves headroom along a wall wide enough for a 180cm mattress.
How much bigger is a UK super king than a UK king?
The UK super king is 30cm wider than the UK king, and the two are the same length at 200cm. On a firm mattress like the Sealy Sterling that extra width is mostly about distance from your partner rather than legroom, so it suits couples more than tall solo sleepers.
Is the Sealy Sterling super king suitable for sharing with children?
It works well for it. With 90cm per adult there is realistic room for a child who appears in the night, and the firm pocket spring support stays consistent rather than sagging toward the heaviest sleeper. The Geltex layer also helps with airflow, which you notice when extra bodies raise the temperature.
Where can I buy the Sealy Sterling super king?
The Sealy Sterling is sold as a Furniture Village online exclusive, so you cannot try it in a showroom first. Compare the retailer prices listed on this page, which are updated as retailers change them, and check the delivery estimate before ordering as timings for this mattress can run to five weeks.