Sealy Decadence King Size Mattress
The Sealy Decadence is a firm mattress, which means it holds you on top of the surface rather than letting you sink in.
£1,784.15
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Sealy Decadence Mattress
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Mattress details
Mattress
Sealy Decadence Mattress
Size
Firmness
Firm
Construction
Depth (cm)
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Key benefits
- 75cm each for two people sharing: That personal width means you can turn over or stretch out without negotiating for space, even with a dog claiming a corner.
- Less disturbance on different schedules: A firm surface transfers less rocking than a soft one, and the UK king's width means an early alarm on one side is easier to sleep through on the other.
- 200cm of length for taller sleepers: The UK king is 10cm longer than the UK double, which matters once one of you is approaching six foot and tired of feet on the frame.
- A known footprint to plan around: At 150 x 200cm we suggest a room of at least 2.7m x 2.9m, so you can check the fit before ordering rather than after.
- Firm support across the full width: The surface stays supportive edge to edge, so a back or front sleeper gets the same solid feel whichever side of the bed they end up on.
This size suits you if...
You share the bed every night and a double has started to feel like a compromise, one of you gets up hours before the other and you want that felt less through the mattress, or someone in the bed is tall enough that the extra 10cm of length over a UK double is the real prize.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest for a UK king. We'd recommend the UK double instead: it's 15cm narrower and 10cm shorter, and we suggest at least 2.6m x 2.8m for it.
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FAQ's
Is the Sealy Decadence UK king big enough for two adults?
Yes, comfortably for most couples. At 150cm wide it gives 75cm each for two people sharing, and because the Decadence is firm, movement on one side carries less to the other than it would on a softer surface. If you routinely share with a child or a large dog as well, the UK super king adds another 30cm of width.
What room size does a UK king Sealy Decadence need?
We suggest at least 2.7m x 2.9m for a UK king. That allows walking space around a 150 x 200cm mattress once bedside tables are in. New build master bedrooms can be tighter than they look after wardrobes go in, so measure the free floor rather than the room dimensions on the plan.
Is the Sealy Decadence in a UK king long enough for a tall sleeper?
At 200cm long, it gives 10cm more length than the UK double. For anyone approaching six foot, that is usually the difference between feet hanging off the end and lying flat, and the firm surface keeps a back or front sleeper level along that full length. The UK super king is the same length, so sizing up buys width only.
Should a couple upgrade from a double to a king Sealy Decadence?
If you sleep well on a firm mattress and the main complaint is space, usually yes. The UK king is 15cm wider and 10cm longer than the UK double, a difference you feel every night, particularly if you keep different hours. The one caution is the room: allow at least 2.7m x 2.9m before committing.
Where can I compare prices for the Sealy Decadence in a UK king?
Use the retailer table on this page. The prices shown here are updated as retailers change them, so it reflects what the UK king actually costs today rather than a figure that has since moved. Availability of individual sizes can differ between shops, so check the listing shows the UK king specifically before you buy.