Made from lightweight stretch ripstop material on the upper panels for sun protection and elastic mesh with laser-cut ventilation on the side panels for breathability, the Odlo Performance Pro running cap is designed for hot-weather runs, hikes and more. The ultra-lightweight, flexible foam brim stays light whether you are wearing it on your head or packing it into a pocket. It features a rear drawcord for an adjustable fit and reflective details for adventures in low-light conditions. A quick feel and quick drying. A high-performance cap designed to protect against the sun and sweat. 90% polyamide, 10% elastane