Silentnight Rest Assured Milldale 3000 Pocket Wool Super King Mattress - Firmer
The Milldale 3000 is a pocket spring mattress from Silentnight's Rest Assured range, built around 2000 zoned pocket springs plus 1000 mini springs, which means support that adjusts to different parts of your body rather than pushing back evenly everywhere.
- Natural fibres keep you cooler
- Firm, zoned support at the hips
- 60-night trial & 5-year guarantee
£1,260
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Silentnight Rest Assured Milldale 3000 Pocket Wool Mattress - Firmer
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Mattress details
Mattress
Silentnight Rest Assured Milldale 3000 Pocket Wool Mattress - Firmer
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Depth (cm)
33
Layers
4
Layer Details
Pillowtop
A tufted pillowtop filled with layers of British wool sits on top, which means a slightly cushioned surface even on this firmer version. Tufting holds the fillings in place so they're less likely to shift or settle unevenly over time.
Silk, wool, cashmere and alpaca layer
Beneath the pillowtop is a blend of silk, wool, cashmere and alpaca. These natural fibres breathe and wick moisture, so the mattress stays comfortable and temperature-neutral through the night.
Sustainable fresh fibres
British wool is layered here with sustainable fresh fibres. This adds depth to the comfort layers while keeping the fillings natural rather than synthetic.
Pocket spring system
The base holds 2000 zoned pocket springs with an additional 1000 mini springs. Zoning means firmer support where your body is heaviest, typically around the hips, while the mini springs add a finer layer of responsiveness closer to the surface.
Layer details from silentnight.co.uk product page, September 2026.
Key benefits
- 90cm each, every night: Two people sharing get 90cm apiece, which means a partner who turns constantly is far enough away that you barely register it.
- Room for the whole household: When children or a large dog treat your bed as theirs, this 180cm width keeps everyone with a genuine share rather than a sliver.
- Zoned support across the full width: The 2000 zoned pocket springs plus 1000 mini springs respond to each sleeper separately, so two very different builds can share without compromise.
- Natural fillings at scale: British wool, silk, cashmere and alpaca breathe well, which matters more on a bed this size where two warm bodies share one surface all night.
- 30cm more than a UK king: The UK super king is 30cm wider than the UK king and exactly the same length, so all the extra goes where couples actually want it.
This size suits you if...
You share the bed every night and want the most space any standard UK size offers, your children or pets regularly end up in with you, or one of you is a genuinely restless sleeper and distance matters more than any comfort layer. Your room should be at least 3m x 2.9m, and a larger master or period bedroom will carry this size comfortably.
Consider another size if...
Your bedroom measures under 3m x 2.9m, or the bed would dominate the room and block drawers or door swing. We'd recommend the UK king instead: it's 30cm narrower, the same length, and needs at least 2.7m x 2.9m.
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FAQ's
How big is the Milldale 3000 in a UK super king?
It measures 180 x 200cm, or 6ft x 6ft 6in. That's the full standard UK super king footprint, giving two people sharing 90cm each. At 32.5cm deep with a tufted pillowtop, it's a substantial mattress, so check your bed frame is rated for a super king before ordering.
What size room do I need for the Milldale 3000 super king?
We suggest at least 3m x 2.9m. That allows you to walk around both sides and open wardrobe doors without squeezing past. In a loft conversion, the ceiling slope usually decides which wall takes the bed, so measure standing height along your intended headboard wall too.
Is the super king Milldale 3000 worth it over the UK king?
If you share with a restless partner, or children and pets join you at night, yes. The UK super king is 30cm wider than the UK king and the same length, and that extra width does more for undisturbed sleep than any filling can. Solo sleepers rarely need it.
Does the Milldale 3000 super king suit couples with children who climb in?
It's one of the better setups for it. With 180cm of width, a child between you still leaves each adult a workable share, and the zoned pocket springs mean a small body doesn't roll into the dip made by a larger one. The firm feel also helps the surface stay stable.
Can two different sleepers share the Milldale 3000 super king comfortably?
The 2000 zoned pocket springs with 1000 mini springs move independently, so a heavier sleeper's movement transfers very little across 180cm of width. Both sides are the same Firmer feel, though, so a lightweight side sleeper may find their half presses a little hard on shoulders and hips.