The Seattle Rain Hat features legendary, award-winning Gore-Tex waterproof protection and an internal adjustment for increased fit and comfort during rainy day activities. Fit & Design: New internal adjustment 3 inch brim with 3.75 inch brim at back Floating foam-stiffened brim Removable chin cord Fully seam taped Tricot lined crown Breathable, wiking Technology: bluesign(R) approved Waterproof UPF 50+ Additional Details: Hand wash in cold water Do not bleach Line dry in shade Do not iron Do not dry clean Do not use fabric softener