1.100% Polyester 2.Elastic Agricola 3.Sun praesidio: Upf50 +, Blocking XCVIII% of UV Radios 4.Adjustable: Hat Coronatus Back Elastica filum cum Toggle, Polyester Polyester, Polyester: Lining cum humorem wicking sweatband; Farighable et refrigerationem pro reticulum in hat utraque parte