100% Polyester
UPF 50+ - blocks 98% of UVA/UVB rays
"FABRIC: Aqua Classic is a technically elegant sun-safe swim fabric that is chlorine and saltwater resistant with a modest 4-way stretch; Lightweight quick dry and comfortable"
"FEATURES: 'No impact zone' cutout in inner bill to protect forehead from any impact; Elastic cord and toggle at back for adjustability; Approx. circumference: 22 1/2 inches (S/M) 24 inches (L/XL); Brim: 3 1/2 inches; Hand wash cold line dry; Imported"
"RECOMMENDED FOR: your days in the water at the pool lake or ocean - great for leisurely lap swims or water aerobics"
"NOT RECOMMENDED FOR: active fitness not moisture-wicking and may cause overheating"