Sunny days make for great runs. Keep the glare out of your eyes with this lightweight running hat. Designed for Run. Adjustable back closure for a custom fit. Reflective details. Inner front panel: 58% Nylon, 27% Polyester, 9% Lycra elastane, 6% X-static nylon. Sweat band: 58% Nylon, 27% Polyester, 9% Lycra elastane, 6% X-static nylon. Body: 86% Polyester, 14% Elastane.