the weathered cotton duckbill flat cap is an exceptionally comfortable well made cap from dorfman-pacific. made of a durable cotton/poly blend the fabric has been treated to create a more relaxed and worn in look to the cap. the cap is finished with a pre-curved visor and elasticized stretch to fit sweatband.flat cap details:52% cotton/48% polyesterpre-curved visorduckbill styleelasticized sweatband for easy fithat details:small/medium - 54cm to 56cmlarge/x-large - 57cm to 59cm