Built from recycled 2.5-layer Pertex Revolve fabric with a fluorocarbon-free DWR treatment, it is our first ever mono-polymer waterproof jacket. It uses a polyester outer and membrane, which means that, in addition to being 100% recycled, it also has the future potential to be fully recycled at the end of its life.. With waterproof performance of 20,000mm HH, alongside moisture-wicking breathability of 20,000g MVTR, its hill-walking practicality is equally advanced.