UPF 40+ Metallic Blend Roll Up Visor - Silver Cream W39S35D 100% Polyester Made of 100% polyester. ONE SIZE fits most with adjustable velcrorized strap closure with bow, fitting up to XL. Crown measures 2 1/4 inches high. Brim measures 4 1/2 inches long, rollable. Packable, roll up and crushable.