– lightweight, fast-drying performance-ready COOLmatic fabric and repreve recycled performance fiber. – UPF 50 protection on the brim and body. – machine washable. – soft360 pliable brim for easy packability. – reflective detailing for night run visibility. – ciele athletics™ million miles guarantee. – 2 sizes S/M 56.5 cm. L/XL 60 cm. adjustable. – weight 90 grams. – designed for people who run.