Tuft & Springs Serenity 5000 Mattress
Mattress
Tuft & Springs Serenity 5000 Mattress
Size
Firmness
Construction
Depth (cm)
38
Layers
2
Layer Details
- Pillow Top. A plush stitched-in pillow top filled with wool, cotton and cashmere, which means a soft, cushioned surface without needing a separate topper. The natural fibres also help regulate temperature, useful if you tend to sleep warm.
- Pocket Springs. Up to 5,000 pocket springs that move independently of one another, which means support is targeted to your pressure points rather than spread evenly. It also helps limit motion transfer, so a restless partner is less likely to wake you.
Layer details from mattressnextday.co.uk product page, September 2026.
- Fits a typical shared bedroom: We suggest a room of at least 2.6m x 2.8m for the UK double, which means most UK main bedrooms can take it and still leave space to walk round.
- Calmer nights at close quarters: The pocket springs move independently to limit motion transfer, which matters more on a UK double, where 67.5cm each puts a restless partner closer to you.
- A soft surface for both halves: The wool, cotton and cashmere pillow top covers the whole 135cm width, so neither of you needs a separate topper for your side.
- Cooler with two in the bed: Natural fibres in the pillow top help with breathability, which means less trapped warmth when two bodies share the narrower surface of a UK double.
- Easy bedding, with one catch: Double duvets are simple to find, but the 38cm depth means you'll need deep fitted double sheets rather than standard ones.
This size suits you if...
You share the bed with a partner and your bedroom is closer to 2.6m x 2.8m than 3m x 3m, so keeping bedside tables on both sides matters more than extra width. It also suits you if you're setting up a spare room for couples who come to stay for a few nights.
Consider another size if...
You and your partner already feel cramped at 67.5cm each, or one of you sleeps spread out. We'd recommend the UK king instead: it is 15cm wider and 10cm longer, and we suggest at least 2.7m x 2.9m.
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Is the Serenity 5000 UK double wide enough for two people?
The UK double gives each of you 67.5cm, which is workable for most couples but snug if either of you sleeps sprawled out. The pocket springs help by limiting motion transfer across the bed. If you want more space, the UK king gives 75cm each, so the UK double gives 7.5cm less per person.
Will a Serenity 5000 UK double fit in my bedroom?
We suggest allowing at least 2.6m x 2.8m for the UK double, with around 3m x 3m feeling comfortable. Measure with your bedside tables and wardrobe doors in mind, because a room that takes the mattress may still feel tight once furniture is in. The UK king needs more, and we suggest at least 2.7m x 2.9m for it.
What sheets fit the Tuft & Springs Serenity 5000 in a UK double?
You'll need deep fitted double sheets, because the Serenity 5000 is 38cm deep and standard fitted sheets may not tuck under properly. On top, a 200 x 200cm double duvet is the usual choice for a UK double, and those are easy to find.
Is the Serenity 5000 double long enough for tall sleepers?
The UK double is 190cm long, or 6ft 3in, which suits most adults. If either of you is tall enough to find your feet near the end, the UK king is 10cm longer as well as 15cm wider, which may be the more comfortable choice.
What are the Serenity 5000 UK double dimensions in feet?
The UK double measures 4ft 6in x 6ft 3in, which is 135 x 190cm. That is the traditional British double, so frames, headboards and bedding labelled as double should match it, although you'll still want deep fitted sheets for the 38cm depth.