Medium-weight fabric has a unique pattern in the form of a hexagon, captures a large amount of heat, but still is breathable.4-Way Stretch technology enables better movement in every direction.The material wicks away sweat and dries very quickly.Waterproof woven overlays for greater durability and protection from the elements.Folded cuffs with built-in thumb holes.Secure zippered pocket on the underside of the back.Reflective details for running in low light.