Millbrook Wool Sublime Soft Pocket 11000 Super King Mattress
The Millbrook Wool Sublime Soft Pocket 11000 is a premium pocket sprung mattress from Millbrook, available in six UK sizes from Small Single up to Super King.
- Soft, cushioned feel for side sleepers
- Natural wool & silk fillings
- Double-sided for even wear
£1,909.02
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Millbrook Wool Sublime Soft Pocket 11000 Mattress
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Mattress details
Mattress
Millbrook Wool Sublime Soft Pocket 11000 Mattress
Size
Firmness
Soft
Construction
Pocket Spring
Wool
Depth (cm)
Layers
4
Layer Details
Viscose cover
A chemical-free viscose fabric that is soft to the touch, breathable and has a silk-like lustre. It gives a smooth, gentle surface to sleep on.
Natural fillings
Layers of Hampshire wool, cashgora wool, silk and soft English spun cotton, hand tufted to hold them in place. They give a natural, cushioned feel and keep the filling from shifting.
Pocket spring comfort layers
Three 1500 pocket spring tablet comfort layers sit on either side of the central springs. They add a springy cushioning on both sides, which suits a mattress you can turn.
Central pocket spring core
A central core of 2000 pocket springs, each housed in its own cloth sleeve. Each spring works on its own, so the core gives support that follows your body.
Layer details from archerssleepcentre.co.uk and bedconnect.co.uk product pages, October 2026.
Key benefits
- 90cm of width each: Two people sharing get 90cm each, which means a partner who turns over frequently is far enough away that you'll rarely feel it.
- Room for night-time visitors: If children pad through at 3am, or a large dog treats the bed as their own, 180cm of width means everyone still gets a workable share.
- A softer feel with space to match: A soft pocket sprung mattress lets each sleeper settle into their own side, and at this width your partner's dip in the surface stays on their half.
- 15cm more each than the UK king: The UK super king is 30cm wider than the UK king at the same length, giving each of you 15cm more than the UK king's 75cm.
- Fills a large master properly: In a period property or a generous new build main bedroom, a UK king can look undersized; this footprint suits the room.
This size suits you if...
You share the bed every night and want the most sleeping space a standard UK size offers, one of you is a genuinely restless sleeper, or your household routinely includes children or pets joining you overnight. It also makes sense if you have a large master bedroom: we suggest allowing at least 3m x 2.9m, so the room needs to be on the bigger side.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest for a UK super king, or access is tight on stairs and landings. We'd recommend the UK king instead, which needs at least 2.7m x 2.9m and still gives couples 75cm each.
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FAQ's
Is the Millbrook Wool Sublime super king big enough for co-sleeping with children?
It's the most forgiving size for it. At 180cm wide, two adults sharing get 90cm each, so a child wandering in at night eats into that share without leaving anyone clinging to the edge. A soft mattress with a small person in the middle is cosier than a firmer one, but the width does most of the work.
How much bigger is the UK super king than the UK king for this mattress?
The UK super king is 30cm wider than the UK king, and the two are the same length. For a couple, that means 90cm each rather than the UK king's 75cm, so the UK super king gives 22.5cm more each than a UK double would. If your room takes it, the extra width is the main reason to choose it.
What room size do I need for this mattress in a super king?
We suggest allowing at least 3m x 2.9m for a UK super king, and that's our guidance rather than Millbrook's. That leaves walking space on both sides and room for bedside tables. Before ordering, check the practical snags too: door swing, any tight landing turns, and the higher cost of super king bedding.
Will the super king Millbrook Wool Sublime be hard to get upstairs?
At 180 x 200cm it's the largest standard UK size, so it's the one most likely to struggle on narrow staircases and tight landing turns. Millbrook hasn't published full construction detail for this model, so check the retailer listing for depth and handling guidance, and measure your access route before you commit.
Is the soft feel a problem at super king width for mismatched sleepers?
Less than you might think. Pocket springs respond to each sleeper individually, and with 90cm each you're settling into your own side rather than rolling towards a shared dip. If one of you strongly prefers a firmer surface, though, a soft mattress at any width won't change that, so try the feel before buying.