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. 100% polyester Unstructured Mid-profile Hook and loop with clear rubber tab closure 9FORTY FIT: Features a collegiate look with an adjustable closure, a contoured crown and precurved visor. Product Measurements OSFA Crown Height 6 5/8 Bill/Visor Length 2 3/4 Width of Front Panel(s) 3 3/4 Crown Height Measure from middle of button at top, to brim seam along center front. Bill/Visor Length Measure from outside edge of bill to crown seam at center front. Width of Front Panel(s) Measure from side seam to side seam along bottom of crown (where bill meets crown along seam).