On Running Performance Running Jacket From backcountry trail runs to long road miles to track & field, the On Running Performance Running Jacket is a versatile outerwear piece that protects against inclement weather. On GuardTec™ 3-layer technology provides reliable protection in wetter conditions while remaining breathable enough to keep you drier from sweat on the inside. The four-way stretch provides perfect mobility for any run, the elasticated bottom hem gives a run-ready fit, and the shaped hood is ready and waiting for when the weather closes in. Even in a storm, the two side pockets, with water-resistant zippers, keep keys, gels and essentials safely stored. An inner pocket is also available inside one of the zipped pockets, preventing smaller valuables from bouncing around. When the weather isn't on your side, you can still smash your run training or block session in complete comfort.