Trail running, road running, daily training 100% nylon PERTEX® SHIELD 3L fabric: lightweight, breathable and waterproof (waterproofness=18000mmH2O), provides durable protection against storms Seamless tape prevents water seepage at the seams Lightweight design allows for effortless wearing and easy portability, making it compatible with running backpacks AAC Lite structural ventilation system enhances breathability by 35%, ensuring quick sweat-wicking and long-lasting comfort during physical activities Improved athletic fit based on feedback from numerous trail runners, featuring ergonomic cut, mechanical elasticity, and unrestricted arm movement while running Extra long drop back hem for freedom of movement in sports Expandable back for backpack compatibility, suitable for wearing with running backpacks YKK waterproof zippers Zipper pockets secure your items Reflective printings ensure night visibility A zipper guard collar to prevent scratching Weight: 127g(Size M)