Spring King Wool Luxury Soft 3000 Super King Mattress
The Spring King Wool Luxury Soft 3000 is a soft pocket sprung mattress with deep wool fillings, which means a gently cushioned, sink-in feel rather than a firm, on-top-of-the-bed one.
- Soft, deep wool cushioning
- Warm in winter, fresh in summer
- Minimises partner disturbance
£809
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Spring King Wool Luxury Soft 3000 Mattress
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Mattress details
Mattress
Spring King Wool Luxury Soft 3000 Mattress
Size
Firmness
Soft
Construction
Pocket Spring
Wool
Depth (cm)
28
Layers
3
Layer Details
Quilted Cover
The cover is stitched together with the fillings beneath it, creating a patterned comfort quilt layer. In practice, that means the soft surface feel is built in rather than sitting loose on top.
Wool
Deep layers of plush wool cushion your body at every point of contact. Wool insulates well, keeping you warm and snug, while its breathable structure helps prevent overheating.
Pocket Springs
Each spring sits in its own fabric pocket and moves independently, a little like piano keys. This targets pressure relief precisely, adjusting to your movements and how your weight is distributed.
Layer details from mattressnextday.co.uk product page, September 2026.
Key benefits
- 90cm of sink-in space each: Two sharers get 90cm each, which means you can settle into the soft wool surface without ending up in the dip your partner has made.
- Distance from a restless partner: Independently pocketed springs limit how far a partner's movement travels, and at this width there is simply more mattress between you both.
- Room for a small visitor: When a child climbs in during the night or the dog claims the foot of the bed, the two adults still keep a usable share.
- A clear step up from the UK king: Compared with the UK king you gain 15cm more each for two sharing, on exactly the same 200cm length.
- Breathable wool across a wide bed: Wool fillings insulate while letting air through, which helps when extra bodies, human or canine, add warmth to a shared bed.
This size suits you if...
You share with a partner who tosses and turns and you want a soft, cushioned feel without feeling every movement, or a child or dog regularly ends up in the bed and you would still like 90cm each for the two adults.
Consider another size if...
Your bedroom is smaller than the 3m x 2.9m we suggest for a UK super king. The UK king would suit you better, and we suggest at least 2.7m x 2.9m for it.
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FAQ's
Is the Spring King Wool Luxury Soft 3000 super king big enough for two adults and a child?
For occasional night visits, usually yes. The UK super king gives two adults 90cm each, so a small child tucked between you takes some of that space rather than pushing anyone to the edge. Because this is a soft mattress, the child may drift towards whichever adult sinks deeper, so expect a little shuffling rather than perfect symmetry.
Spring King Wool Luxury Soft 3000 super king vs king: how much extra space do you get?
The UK super king is 30cm wider than the UK king and the same length, which works out as 15cm more each for two sharing. The trade-off is floor space: we suggest at least 3m x 2.9m for a UK super king, against at least 2.7m x 2.9m for the UK king.
Will a soft mattress make me roll towards my partner on a wide bed?
On a soft mattress you sink in rather than lying on top, so a heavier partner can create a slight slope towards them. Width is the best defence. At 90cm each on the UK super king, that slope has much further to reach, and the independently pocketed springs stop most of your partner's movement travelling across to you.
Can I fit a super king mattress in a loft conversion bedroom?
Often, but the sloping ceiling usually decides which wall the bed goes against, and you need full headroom where you sit up and get out. Allow at least 3m x 2.9m of floor for a UK super king, then check the door swing and any tight landing turns on the way up before you order.
Spring King Wool Luxury Soft 3000: UK super king or UK double for a restless sleeper?
If one of you moves a lot, the UK super king makes a real difference. It is 45cm wider and 10cm longer than the UK double, giving 22.5cm more each for two sharing. We suggest at least 2.6m x 2.8m for the UK double, so check your room fits the larger size first.