patagonia hats duckbill visor in blue features an adjustable strap at the back of the cap to ensure the best fit. the short brim shades your eyes from the sun but is not too long to block vision and as it is made of foam it bounces back to its shape after being folded up.this great hat has patagonia on the front and a patagonia fliptag at the back.hat details:the front panel and brim are made of 100% nylonpatagonia name printed on the front leftadjustable strap at the back allows this hat to fit most sizeshat sizing info:adjustable - strap at the back allows most sizes to fit comfortably.