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% polyester Structure: Structured Profile: Mid Closure: Hook and loop with clear rubber tab 9FORTY FIT: Features a collegiate look with an adjustable closure, a contoured crown and precurved visor. Structured for stability with a classic cap shape.