Details- durable TUFFtek canvas.lightweight, cooling and odour control finish, performance-ready recycled COOLmatic|PLUS MIKRAmesh™ on the top and headband.pre-curve pliable SOFTcurvedd brim for easy packability.reflective detailing for night run visibility.S/M 56.5 cm +-.weight 38 grams.machine washableciele athletics™ million miles guarantee.designed for people who run. main fabric: 60% recycled polyester 40% polyester.mesh fabric: 100% recycled polyester. care- wash cold water- hang to dry- no tumble dry- do not use softner- wash with like colors- do not bleach