Sealy Sterling King Size 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
£829
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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
- 1,000 pocketed springs in this size: The UK king contains 1,000 individually pocketed springs, which means each one moves on its own, so an early alarm on one side disturbs the other side less.
- 75cm of width each: Two people sharing get 75cm apiece, enough to change position on a firm surface without nudging your partner awake.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a genuine relief for anyone approaching six foot on a firm mattress that won't let feet sink over the edge.
- A firm feel that suits sharing: Firm support keeps the surface stable across the full 150cm width, so one heavier sleeper is less likely to create a slope towards the middle.
- Geltex where you both lie: The Geltex layer softens the surface slightly and improves airflow, useful when two bodies are adding warmth to the bed all night.
This size suits you if...
You share the bed every night and a double has started to feel like a compromise, you or your partner keep different hours and want the springs to absorb the disturbance, or one of you is tall enough that the 200cm length matters as much as the width. Your room can take it too: we suggest at least 2.7m x 2.9m for a UK king.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king, or you sleep alone. The UK double would suit you better, and we suggest at least 2.6m x 2.8m for that size.
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FAQ's
Is the Sealy Sterling UK king a good choice for couples?
Yes, provided you both like a firm feel. The 150cm width gives 75cm each for two people sharing, and the 1,000 individually pocketed springs in this size respond separately, so movement on one side transfers less to the other. Lightweight side sleepers may find the firmness presses on the shoulder, so factor in how you both sleep.
How many springs are in the king size Sealy Sterling?
The UK king contains 1,000 individually pocketed springs. Because each spring is sewn into its own fabric pocket, they compress independently rather than as a connected unit. In practice that means the mattress contours to two different body shapes across its 150cm width, and a restless partner causes less ripple across the bed.
Is the Sealy Sterling in a UK king long enough for tall sleepers?
At 200cm, or 6ft 6in, the UK king Sealy Sterling is 10cm longer than the UK double. If one of you is around or over six foot, that extra length usually decides the upgrade more than the width does. Anyone taller still gets the same length from the UK super king, so height alone needn't push you up a size.
What room size do I need for the Sealy Sterling UK king?
We suggest a room of at least 2.7m x 2.9m for a UK king, with 3.2m x 3.2m feeling comfortable once wardrobes and bedside tables are in. New build master bedrooms can be tighter than they first appear, so measure with the furniture positioned before you commit. The mattress itself is 150 x 200cm, or 5ft x 6ft 6in.
Should I buy the Sealy Sterling in a UK king or a UK super king?
The UK king is 30cm narrower than the UK super king, and both are the same length, so this is purely a width decision. If a dog routinely joins you, or you both spread out, the UK super king earns the extra width, though we suggest at least 3m x 2.9m of room for it. For most couples the UK king is enough.