Slide Buckle ( 9Twenty ) : Low Crown, Relax Fit, Curved Bill, Adjustable Slide Buckle Strap fit. Velcro( 9Forty ) : Mid Crown, Structured Fit, Curved Bill, Adjustable Velcro Strap fit. Snapback ( 9Fifty ) : High Crown, Structured Fit, Flat Bill, Adjustable Snap fit.
