- lightweight, fast-drying performance-ready COOLmatic fabric and repreve recycled performance fiber. - UPF 40 protection on the brim, front panel and back panel. - machine washable. - pliable SOFTflat brim for easy packability. - reflective detailing for night run visibility. - ciele athletics™ million miles guarantee. - 5 panel fit. 58 cm. adjustable. one size fits most. - weight 62 grams. - designed for people who run.