Men’s Lightweight Alpine waterproof Jacket is designed as a three layer Application to endure the demands of climbing, ski Mountaineers and Serious walking Outdoor enthusiasts, Garments made with 3 layer Microporous are engineered for rough terrain while protecting against the extreme changing and unpredictable conditions presented to mountain Athletes. Many Athletes prefer this type of Technology as it maintains a dry feel when working hard in the most testing conditions, I have worked very hard in testing garments and fabric to find a membrane which meets and copes with what myself and athletes expect.