Built for ultimate performance, this cap has SOLARERA 50 UV protection, MICROERA odor-controlling technology and COOLERA sweat-wicking technology. Ventilating perforations give superior breathability and cooling. Fabric: 100% polyesterStructure: StructuredProfile: MidClosure: Hook and loop with clear rubber tab9FORTY FIT: Features a collegiate look with an adjustable closure, a contoured crown and precurved visor. Structured for stability with a classic cap shape.