Specifically designed for the Hiker/Trail blazer. Not only does this Hat offers complete sun and rain protection, it comes with an evaporative cooling insert in the crown to help against heat stress. FeaturesGuaranteed for Life HyperKewl® evaporative cooling insert Ties on Back hook on brim to clip to backpack 3/4″ AIRFLO® mesh to assist evaporative properties of cooling insert Certified UPF 50+ Made and OR designed in Canada MeasurementsFront & back 3 1/2″; sides 2 1/2″ FabricHat – 98% organic cotton, 2% spandex HyperKewl® Insert – Exterior 100% polyester Interior – 53% polymer fibres; 47% cellulose fibres