Limited edition collab hat lightweight, fast-drying performance-ready COOLwick™ fabric and recycled performance fiber. UPF +40 protection on the brim, front panel and back panel. machine washable. pliable SOFTflat brim for easy packability. reflective detailing on the front, back, under brim and sides for night run visibility.for night run visibility. ciele athletics™ million miles guarantee. 5 panel fit. 58 cm. adjustable. one size fits most. see product guide to compare fits. weight 62 grams.