A functional neck shade, means this ultra-cooling brimmed booney hat is built for temperature regulation and sun protection in the outdoors. The Coolhead Zero Booney features UPF 50 fabric, a vented crown, and all-over Omni-Freeze ZERO technology, which reacts with your sweat to lower the fabric temperature and keep you cool. Imported.100% textured nylon poplinStretch jersey 92% polyester/8% elastaneOmni-FreezeZERO sweat-activated super coolingOmni-Shade UPF 50 sun protectionAdjustable chin strapAdjustable drawcord and toggle at back