Whatever your pace, this half zip will keep up. Perforated fabric adds ventilation during quick jogs, long runs, and everything in between. lightweight, stretch ripstop fabric Lightweight Stretchy Sweat-wicking Quick-drying Lightweight perforated Swift fabric under the arms and at the back is four-way stretch, sweat-wicking, and quick-drying features Kangaroo pocket with hidden phone sleeve Cinch the interior waist and hem drawcord to customize your fit Back vent strategically placed to provide airflow Reflective details