Vispring Dartington Firm King Size Mattress
The Vispring Dartington is a handmade pocket spring mattress filled entirely with natural materials: British fleece wool and cotton, hand-tufted with felt washers so the fillings stay put over years of use.
- Firm support, gently cushioned top
- Natural wool limits heat build-up
- Hand-tufted to hold its shape
£5,149
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Vispring Dartington Firm Mattress
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Mattress details
Mattress
Vispring Dartington Firm Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
21
Layers
2
Layer Details
Upholstery
Natural fillings only: bonded and blended British fleece wool and cotton, encased in high-quality ticking for durability and breathability. It is hand-tufted with felt washers, which means the fillings are anchored in place and far less likely to shift or lump over time.
Springs
A single layer of 1,558 vanadium steel pocket springs, each sewn into a calico pocket and hand-nested rather than glued in rows. That construction lets the springs contour to you individually, so you feel support where you press down and less disturbance from a partner's movement.
Layer details from vispring.com product page, September 2026.
Key benefits
- More room each than a double: At 75cm per person, you get 7.5cm more each than a UK double, which means fewer elbows in the night and less quiet negotiation over the middle.
- Less disturbance on different schedules: Each spring sits in its own calico pocket and responds on its own, so a partner leaving hours before you should disturb your side of the bed less.
- Extra length for a tall partner: At 200cm, or 6ft 6in, the UK king is 10cm longer than a UK double, so a tall sleeper is less likely to find their feet off the end.
- Fits rooms a super king would crowd: It needs less floor than the UK super king, which helps in a new build master bedroom once fitted wardrobes go in; we suggest at least 2.7m x 2.9m.
- Firm support on both halves: With the Firm tension coming from the springs and a gently cushioned wool and cotton surface above, each of you gets the same resistance across your own 75cm.
This size suits you if...
You share the bed and have started to feel cramped on a UK double, one of you is tall enough that a 190cm bed leaves feet exposed, or you keep different hours and want to get up without waking each other.
Consider another size if...
You regularly share the bed with a child or a dog, or you each want a full single-bed width to yourselves. We'd recommend the UK super king instead, which gives 90cm each; allow at least 3m x 2.9m.
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FAQ's
Will a Vispring Dartington UK king fit in my bedroom?
We suggest a room of at least 2.7m x 2.9m for a UK king, with 3.2m x 3.2m feeling comfortable once you add bedside tables and walk around the bed. Measure after wardrobes and radiators are accounted for. Vispring lists the Dartington only in the UK king and UK super king, so there is no smaller version of this mattress to fall back on.
Is the Vispring Dartington UK king long enough for a tall partner?
The UK king is 200cm long, or 6ft 6in, which is 10cm longer than a UK double. For couples where one partner is tall, that extra length is often the main reason to upgrade. The UK super king is the same length, so sizing up adds width only, not length.
Will I feel my partner moving on a Dartington UK king?
Less than on a smaller bed, for two reasons. The springs are individually pocketed and hand-nested, so movement on one side travels less to the other. The UK king also gives you 75cm each, 7.5cm more than a UK double, which puts a little more distance between you.
Should I choose the UK king or UK super king Vispring Dartington?
The UK king gives 75cm each, while the UK super king gives 90cm, so the UK king offers 15cm less each. Choose the UK king if your room is closer to 2.7m x 2.9m. The UK super king needs at least 3m x 2.9m and suits couples who want maximum separation.
How much bigger is a Dartington UK king than my old double?
The UK king is 15cm wider and 10cm longer than a UK double. For two people sharing, that works out at 7.5cm more space each, a difference most couples notice from the first night. You will need to allow more floor, as we suggest at least 2.7m x 2.9m against 2.6m x 2.8m for the UK double.