Millbrook Wool Luxury 1000 Pocket Mattress
Mattress
Millbrook Wool Luxury 1000 Pocket Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
25
Layers
3
Layer Details
- Cover. A soft-touch cotton-viscose cover infused with M-Pure, a 100% plant-based, sustainable treatment. This gives a breathable sleeping surface rather than a synthetic one.
- Comfort fillings. Layers of 100% fleece wool sourced from Hampshire, blended with layers of cotton and hand-tufted. Tufting anchors the fillings in place, which means less shifting and settling over the years.
- Support system. 1000 individual hand-nested pocket springs, each encased in cloth pockets. Because each spring moves on its own, the mattress responds to your shape and limits motion transfer between partners.
Layer details from mattressonline.co.uk product page, September 2026.
- Real stretching room for one: At 120cm wide, a solo sleeper gets 30cm more width than a UK single, which means you can turn and sprawl without an arm hanging off the edge.
- Fits rooms a double crowds: Being 15cm narrower than a UK double, this size can leave a walkway or keep a door swinging clear in a compact bedroom.
- Wool comfort in a smaller footprint: You get the same fleece wool and cotton fillings as the larger sizes, so choosing the compact option costs you nothing in feel.
- Pocket springs across the full width: The 1000 hand-nested springs respond independently to your shape, so even near the edges of this narrower size the support follows you rather than tipping you inward.
- Easy bedding and frames: 4ft is a standard UK size, so small double fitted sheets and frames are simple to find, and a standard double duvet drapes nicely over it.
This size suits you if...
You sleep alone and have outgrown a single but your room can't spare the width a UK double takes, you're furnishing a loft conversion or box room where every centimetre beside the bed matters, or you're setting up a guest room or holiday let where couples stay occasionally rather than nightly.
Consider another size if...
You share the bed every night, as 120cm is tight for two adults long term. We'd recommend the UK double instead, which gives 67.5cm each for two sharing and needs a room of at least 2.6m x 2.8m.
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Is the Millbrook Wool Luxury 1000 small double big enough for two adults?
For the occasional night, yes, and the pocket springs limit motion transfer so a restless guest is less disruptive. For nightly sharing it's a squeeze, though. The UK double gives each of you 67.5cm of width, which most couples find noticeably more comfortable over time.
What room size do I need for a small double mattress?
We suggest allowing at least 2.4m x 2.8m for a UK small double. That leaves room to walk around the bed and open drawers or a wardrobe. That's Mattress Unboxed's own guidance rather than Millbrook's, and if your room is tighter you may still manage, just expect compromises on furniture placement.
How much wider is a small double than a single?
The UK small double is 30cm wider than the UK single, and the two are the same length at 190cm. That extra width is the whole point of this size: proper room to spread out for one person, on a mattress that still fits where a UK double wouldn't.
What bedding fits the Millbrook Wool Luxury 1000 in a small double?
You'll need small double (4ft) fitted sheets, which are widely stocked as this is a standard UK size. A standard double duvet works well on top, with a comfortable overhang on both sides. There's no need to hunt for specialist bedding.
Is a small double a good choice for a teenager?
Often, yes. A teenager who has outgrown a single gets 30cm of extra width, while the room keeps 15cm more floor space than a UK double would allow. The medium firm feel of this mattress also suits growing back and stomach sleepers, though lightweight side sleepers may find it slightly firm.