Dunlopillo Millennium reviewed

The Dunlopillo Millennium is a medium-feel latex mattress and the deepest model in Dunlopillo’s Core collection, 26 cm according to Dunlopillo, with the thickest layer of natural Talalay latex in the range. MattressNextDay sells it from £1,169 for a single. It is the most expensive Core model and suits side sleepers and couples who want deep, springy cushioning.

What is inside

Dunlopillo’s Core collection page describes the same three components in every Core mattress; the Millennium simply carries the most latex. MattressNextDay’s product page calls it “a deep layer of Talalay latex”.

The weights MattressNextDay publishes give a useful sense of how much more material goes into it. A double Millennium weighs 34 kg, against 23 kg for the same size of the entry-level Firmrest. Dunlopillo quotes 26 cm deep, while MattressNextDay and Land of Beds list 24.5 cm.

Sizes and prices

Prices and weights are MattressNextDay’s at the time of writing (September 2026), apart from the small double, which only Land of Beds lists. A 47 kg super king is a two-person job to rotate.

Feel and who it suits

MattressNextDay rates the Millennium medium and says it suits any sleeping position. Because it has the deepest latex and Dunlopillo positions it as the most cushioned model, we place it at the soft end of medium, 4 out of 10. The extra depth lets a side sleeper’s shoulder and hip sink in, and latex springs back quickly, so it avoids the slow, stuck feeling of dense memory foam. Front sleepers, especially heavier ones, may find the hips dip too far.

A medium rating also lines up with the evidence on back pain. In a Lancet trial of 313 adults with chronic low-back pain (Kovacs et al., 2003), those given a medium-firm mattress had better outcomes for pain in bed, pain on rising and disability after 90 days than those on a firm one.

Allergies, manufacturing and guarantee

Dunlopillo calls Talalay latex hypoallergenic and anti-microbial, but the NHS names latex among the common allergy triggers, so check with the retailer if you have a latex allergy. MattressNextDay lists the Millennium as made in the UK, free of animal by-products and built by an approved member of the National Bed Federation, whose members are audited by SATRA against the NBF Code of Practice.

It carries a 15-year Dunlopillo guarantee. There is no sleep trial from Dunlopillo, which sells only through stockists, and we found none on this model at MattressNextDay. Delivery from MattressNextDay is free and next day on orders placed by 6pm.