This original trucker cap has a shapeable pre-curved bill with Flexfit 110® technology sweatband. The fabric is a poly/spandex blend with performance mesh and is treated with UV guard with quick dry for maximum performance. This cap has an adjustable plastic snap tab and is one size fits most - Probably the most comfortable cap you'll ever wear. The number one stretch technology combined with the popular snap back look makes this cap your go to for lifestyle, branding, and retail.