55% Linen, 45% Cotton Hook and Loop closure Hand Wash Only UPF 50+ - blocks 98% of UVA/UVB rays FABRIC: Moisture wicking mesh internal sweatband with a zip off crown for optional visor; Hook and loop fastener tab at back of crown for sizing; Travel friendly packable construction FEATURES: Approx. circumference: 22 1/2 inches; Brim 4 3/4 inches; Hand Wash; Imported RECOMMENDED FOR: everyday leisure, gathering with friends, strolling the city and enjoying an al fresco lunch NOT RECOMMENDED FOR: swimming, not chlorine and salt water resistant or water repellent Coolibar UPF 50+ Women's Bel Aire Zip-Off Sun Visor Sun Protective - BT5FXO21J