Whether spending time on a beach, boat, or an exposed switchback trail, the Outdoor Research Sombriolet Sun Bucket Hat will keep your head shaded and cool. The lightweight fabric provides UPF 50+ sun protection, and there Are mesh-backed side vents to promote air circulation. A drawcord cinch around the crown adjusts for a snug Fit and a removable chin cord offers added security in windy conditions. Features of the Outdoor Research Sombriolet Sun Bucket Hat Breathable Lightweight Wicking Protective SolarShield Construction UPF 50+ Crown Venting Internal Cinch-Band Adjustment Removable Chin Cord