Millbrook Wool Luxury Latex 4000 Pocket Mattress

Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.

This mattress makes sense if you want natural materials without giving up spring support. The wool, silk and cashgora fillings help regulate temperature, and the graphite latex adds an adaptive, springy feel that shapes to your body. Underneath, 1,000 pocket springs with a 7-zone ergonomic design sit alongside 3,000 mini springs, which means firmer support where your body is heaviest and a little extra give elsewhere. Millbrook's Ultra Edge system, a rod wire frame with butterfly clips, keeps the sides usable, helpful if you share a bed or sit on the edge to get dressed. Millbrook is a National Bed Federation Approved Brand, which offers some reassurance about how the mattress is made.

Combination sleepers
The natural bounce of the graphite latex layer makes it easy to change position through the night rather than feeling sunk in.

Couples
Millbrook's Ultra Edge rod wire frame firms up the perimeter, so both of you can use the full width without feeling you might roll off.

Warm sleepers
Wool, silk and a cotton blend are breathable layers that help regulate temperature, which means less heat building up around you overnight.

Eco-conscious buyers
Hampshire wool, silk and cashgora fillings plus a latex layer give natural materials, while the pocket springs keep the support you expect.

Side sleepers
The 7-zone pocket spring design supports hips and shoulders where they need it, while the adaptive latex shapes gently around your body.

If you prefer a firm mattress, the medium feel here may be softer than you want. Anyone avoiding synthetic materials should know the comfort layers include polyester alongside the natural fibres. And if you like a slow, cradling memory foam feel, the bouncy latex will feel quite different.

How firm is the Millbrook Wool Luxury Latex 4000 mattress?

Millbrook describes it as medium, although some retailer listings label it medium firm. A medium feel suits most sleeping positions, with the latex and wool layers softening the surface while 4,000 springs provide support underneath. If you want a distinctly firm bed, this is likely to feel softer than you expect.

Does the Millbrook Wool Luxury Latex 4000 come with a trial?

MattressOnline offers a 100-night trial. That trial is the retailer's own policy rather than a Millbrook guarantee, so if you buy elsewhere, check that seller's terms before ordering.

How many springs does the Millbrook Wool Luxury Latex 4000 have?

It has 4,000 springs in total: a core of 1,000 pocket springs with a 7-zone ergonomic design, plus 3,000 mini springs that add bounce and comfort. Each pocket spring moves independently, which means less motion transfer between you and a partner.

How deep is the Millbrook Wool Luxury Latex 4000 mattress?

It is 32cm deep, which is a generously deep mattress. Check that your fitted sheets are made for deeper mattresses, as standard ones can be a tight fit at this depth.

What guarantee does the Millbrook Wool Luxury Latex 4000 have?

The MattressOnline listing states a 5 year guarantee, and its specification section confirms 5 years. The page also mentions a further warranty period beyond that, so it is sensible to confirm the exact cover with the retailer before you buy.