Feather & Black Belvoir King Size Mattress
The Feather & Black Belvoir is a firm tension pillowtop mattress that pairs 1,015 individually wrapped pocket springs (in the king size) with a layer of memory foam, which means you get firmer support underneath with a softer, cushioned surface on top.
- Firm support, cushioned pillow top
- Minimises partner disturbance
- 100-night trial
£899
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Feather & Black Belvoir Mattress
More available sizes
Mattress details
Mattress
Feather & Black Belvoir Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Memory Foam
Depth (cm)
28
Layers
3
Layer Details
Knitted pillowtop
A soft knitted pillowtop with a sumptuous pillow top finish, which adds extra depth. In practice this gives a cushioned first impression before you reach the firmer support below.
Memory foam
A layer of soothing memory foam that relieves pressure and works with the pocket springs beneath. It adapts to your movements during the night, so you get embracing support rather than a rigid feel.
Pocket springs
1,015 individually wrapped pocket springs in the king size. Each spring moves independently, which means support that follows your shape and less disturbance from a partner shifting about.
Layer details from featherandblack.com product page, September 2026.
Key benefits
- 75cm each for two people sharing: That's your own clear stretch of mattress, so neither of you spends the night negotiating for space.
- Pocket springs earn their space here: The 1,015 individually wrapped pocket springs in the king size respond to each sleeper separately, so an early riser can slip out without waking a partner still asleep.
- Extra length for taller sleepers: At 200cm long, the UK king is 10cm longer than the UK double, which stops feet hanging over the edge for anyone nearing six foot.
- Firm support across a wider surface: The firm tension holds its shape across the full 150cm width, so you won't both roll towards the middle over time.
- Room for the awkward months: During pregnancy or recovery after surgery, the extra width leaves space for propped pillows and frequent position changes without pushing a partner to the edge.
This size suits you if...
You share the bed every night and the double you have now feels tight, especially if one of you keeps different hours and gets up earlier, or if either of you is close to six foot and wants the extra 10cm of length. It also makes sense if you're expecting a baby and need room for pillows and shifting positions through the night.
Consider another size if...
Your bedroom won't comfortably take a 150 x 200cm mattress, which we'd say needs at least 2.7m x 2.9m of floor space. In that case the Feather & Black Belvoir in a UK double would suit you better, and we suggest at least 2.6m x 2.8m for the UK double.
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FAQ's
Is the Feather & Black Belvoir in a UK king long enough for tall sleepers?
At 200cm, the UK king is 10cm longer than the UK double, and for anyone approaching six foot that difference is the whole point of the upgrade. If length is your reason for sizing up, the UK king gets you there without the extra width, and therefore the bigger room, that a UK super king demands.
How much space does each person get on a UK king Belvoir?
Two people sharing get 75cm each across the 150cm width. That's a noticeable step up from a double: enough room to change position, prop pillows during pregnancy, or ease in and out while recovering from an injury, all without disturbing the person next to you. The Belvoir's pocket springs help here too, absorbing movement on each side independently.
Should we choose the Belvoir 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 the choice is purely about width and room size. We suggest at least 3m x 2.9m for the UK super king, against 2.7m x 2.9m for the UK king. If a dog routinely joins you, that extra 30cm may be tempting.
Will the UK king Belvoir fit a new build master bedroom?
Often, but measure first. New build masters can feel smaller than the floor plan suggests once wardrobes go in. We suggest at least 2.7m x 2.9m for a 150 x 200cm mattress, ideally more so doors and drawers open freely. If your room falls short, the Feather & Black Belvoir in a UK double needs at least 2.6m x 2.8m.
Where can I buy the Feather & Black Belvoir in a UK king?
Compare the retailers listed on this page. The prices shown here are live and updated as retailers change them, so it's worth checking back if you're a few weeks from buying. Availability in one size doesn't always match another, which is why each size of the Belvoir has its own comparison.