Sealy Tranquility Double Mattress
The Sealy Tranquility is an extra firm mattress built on Sealy's AlignSupport spring system with foam layers on top.
- Properly extra-firm feel
- AlignSupport springs for spinal support
- Foam layers take the edge off
£1,279.25
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Sealy Tranquility Mattress
More available sizes
Mattress details
Mattress
Sealy Tranquility Mattress
Size
Firmness
Extra Firm
Construction
Foam
Depth (cm)
Layers
Layer Details
Key benefits
- Made for typical UK bedrooms: At 135 x 190cm, the UK double leaves space for a wardrobe and drawers in most rooms, which a UK king often doesn't.
- Room for bedside tables both sides: In a room around the 3m x 3m mark, a UK double usually leaves enough wall for a bedside table on each side.
- Extra firm suits sharing: A solid, high-resistance surface flexes less when your partner moves, so one person turning over disturbs the other slightly less.
- A sensible guest room choice: If visiting couples will use it, the UK double is the accepted standard, and extra firm support divides opinion less than a soft, sink-in feel might.
- Easy to dress: Double sheets and 200 x 200cm duvets are stocked everywhere at every price, useful if you're furnishing a whole home and spreading the budget.
This size suits you if...
You share the bed every night in a room where a UK king would dominate, you both sleep on your back or front and want firm support, or you're kitting out a guest room that visiting couples will use. It also suits a solo sleeper who likes space to spread out, or shares the mattress with a dog or cat that claims a corner.
Consider another size if...
You're a couple with the room for more width, since 67.5cm each is workable rather than generous on an extra firm surface. We'd recommend the UK king instead: it's 15cm wider and 10cm longer, and needs a room of at least 2.7m x 2.9m.
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FAQ's
Is a UK double Sealy Tranquility big enough for two people?
Yes, for most couples. The UK double gives 67.5cm each for two people sharing, the traditional British standard. Because the Tranquility is extra firm, you won't roll towards each other the way you might on a softer mattress, which makes the width feel a little more usable. Broad-shouldered couples may still prefer the UK king.
Will a double Sealy Tranquility fit in a small bedroom?
Usually, yes. We suggest a minimum room size of 2.6m x 2.8m for a UK double, with around 3m x 3m the comfortable norm if you want bedside tables on both sides. In a second bedroom or a first flat, that generally leaves room for a wardrobe and a chest of drawers too.
Should a couple choose the Tranquility in a UK double or a UK king?
It mostly comes down to your room. The UK double is 15cm narrower and 10cm shorter than the UK king, and we suggest at least 2.7m x 2.9m for the UK king. If your bedroom clears that comfortably and you both value space, size up. If not, the UK double is the sensible pick.
Is the Sealy Tranquility double good for a guest room?
It's a reasonable fit. The UK double is the size visiting couples expect, and its footprint suits the smaller rooms guest beds often occupy. One caution: extra firm is a distinctive feel, and guests used to softer mattresses will notice the resistance. Back and front sleepers tend to get on with it best.
Where can I buy the Sealy Tranquility in a UK double?
Stockists change, so rather than name one here, compare the retailers listed on this page. The prices shown are updated as retailers change them, which matters on a mattress at this level, where even a small percentage difference between listings adds up to real money.