Information: Omni-Shade? 100% textured nylon poplin on top, sides and brim; Omni-Wick? sweatband and mesh vents; Omni-Shade? UPF 50 protects you from the sun?s harmful rays; Omni-Wick sweatband and mesh venting actively breathe and pull moisture away from your skin to keep you cool; Adjustable drawcord and toggle at back; Fits most: 21.5" - 24.5"; 3" brim;