1.100% Polyester 2.Elastic closure 3.Sun protection: UPF50+, blocking 98% of UV Rays 4.Adjustable: hat crown back string elastic with toggle, adjustable hat circumference 5.Cozy to wear: lightweight quick dry polyester fabric; lining with moisture wicking sweatband; breathable ແລະຄວາມເຢັນສໍາລັບຕາຫນ່າງທີ່ຫມວກທັງສອງດ້ານ