The Women's downpour eco is a mono-polymer waterproof jacket. What's that you ask?It's an effective waterproof made from 2.5-layer Pertex Revolve fabric with a durable water repellent that contains not PFC or PVC, making it tons better for the environment. As well as being made from 100% recycled material, it's also completely recyclable at the end of its life. Does that affect its performance? No. It has a hydrostatic head (HH) of 20,000g MVTR. If you're not familiar with HH, 20,000 is plenty to cope with even the worst British downpour. It's also moisture-wicking and breathable, helping you to stay cool and dry as you move. Adjustable hem and cuffs and pit zips mean you can adjust the jacket to your desired fit and ventilation level ... More info