Sealy Tranquility Single 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
£1,070.15
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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
- Fits where other sizes can't: At 90cm wide it slots into a loft conversion under the slope or a spare room that doubles as an office, and we suggest just 2.1m x 2.8m of floor space.
- Extra firm support for one: The AlignSupport spring system gives a genuinely solid feel, which suits back and front sleepers who want firm spinal support in a compact size.
- Guest room friendly: A single leaves space for a second bed and a walkway, so a guest room can sleep two visitors rather than one.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm single duvet fit, and both are the most widely stocked and affordable bedding of any UK size.
- Foam layers over the springs: Foam on top of the coils takes the edge off the firmness, which means support without the feeling of sleeping directly on springs.
This size suits you if...
You sleep alone in a compact room, perhaps a first flat or student let where the frame came with the property, and you want firm support rather than a soft, sink-in feel. It also suits a spare room that needs to earn double duty as an office, or a guest setup where two singles beat one bigger bed. Back and front sleepers who like plenty of resistance will get on with it best.
Consider another size if...
You're buying for a lightweight side sleeper or a young child, since the extra firm surface can push back at the shoulder and hip. For a growing teen who'll want more width, we'd recommend the UK double instead; allow at least 2.6m x 2.8m of floor space for it.
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FAQ's
What size is the Sealy Tranquility UK single?
It measures 90 x 190cm, which is 3ft x 6ft 3in. That's the standard UK one-person size, so it fits standard single bed frames and takes standard single sheets and a 135 x 200cm single duvet without any hunting for unusual bedding.
How much room do I need for the Sealy Tranquility in a UK single?
We suggest allowing at least 2.1m x 2.8m of floor space. That leaves enough room to walk around the bed and open drawers or wardrobe doors, even in a child's room where the bed competes with a desk and toy storage. Smaller rooms can work, but the space starts to feel tight.
Is the Sealy Tranquility single a good choice for a child or teenager?
It depends on how they sleep. The Tranquility is extra firm, which suits back and front sleepers who want plenty of support, but lighter children and side sleepers may find it too unyielding at the shoulder and hip. For an older, heavier teen who sleeps on their back, it's a more natural match.
Should I buy the Sealy Tranquility in a single or a double?
The UK single is 45cm narrower than the UK double, and both are the same length. A solo adult who spreads out, or a teen you expect to keep the bed for years, may prefer the UK double if the room allows; we suggest at least 2.6m x 2.8m for it. For guest rooms and compact spaces, the UK single is the practical pick.
Where can I buy the Sealy Tranquility mattress in a single?
Availability shifts, so the most reliable answer is the live comparison table on this page, which is updated as retailers change their listings and prices. Check it before you buy rather than relying on a snapshot, since stock of individual sizes can come and go.