100% Polyester Elastic closure Hand Wash Only UPF 50+ - blocks 98% of UVA/UVB rays FABRIC: Lite fabric is ultra-soft with a cotton like feel, lightweight, breathable, quick dry performance FEATURES: Approx. circumference: 22 1/2 inch (S/M); 23 1/2 inch (L/XL); 24 1/2 inch (XXL); Brim: 4 inch (front), 3 inch (sides); Elastic drawcord at back of crown for adjustable fit, internal sweatband, with lightweight foam brim; Hand wash, line dry; Imported RECOMMENDED FOR: when you want to keep your cool and stay UPF 50+ sun protected while picking up the pace outdoors NOT RECOMMENDED FOR: swimming, not chlorine and salt water resistant or water repellent Coolibar UPF 50+ Men's Women's Matchplay Golf Hat Sun Protective - BN0VVX6U8