Based on the classic sou'wester, this hat has an extended rear brim which keeps rain away from the neck. The ultimate hat for extremely wet weather conditions. Totally waterproof, breathable and windproof. Large extended rear brim for extra neck protection. Detachable chinstrap and a mesh lined interior for a comfortable fit. Material composition: Outer Shell: 100% Polyester; Micro-pourous Membrane; Inner: 100% Polyester.