The essential lightweight adventure jacket for year-round activity The essential  lightweight waterproof rain jacket. Practical for a variety of weather conditions with a fully waterproof and windproof yet breathable HELLY TECH® construction. Waterproof, Windproof and breathable HELLY TECH® Performance, with 2 5 layer 100% polyester fabric with 100% polyurethane laminate 10,000mm Waterproofness and 10,000gm moisture vapor permeability Waterproof, Windproof, breathable & fully seam sealed Exceptional performance featured fabric within a classic, active outdoor design