Fit & Design: Adjustable chinstrap to fit you comfortably This Mid Size fedora is perfect for a breezy weekend by the lake Flat brim in front and slightly wider in the back Strategic crown ventilation gives room to breathe Hidden adjustable interior sizing for your customization Wicking comfort sweatband ensures a comfortable fit Technology: bluesign(R) certified wicking sweatband keeps sweat away UPF 50+ sun protection on brim and top-of-crown liner keeps your skin safe from UV rays Additional Details: Pack with care Do not bleach, iron or dry clean. Avoid wet conditions. Line dry if wet Hat circumference: Medium: 22" - 22 7/8"; Large: 22 7/8" - 23 7/8" Flat brim circumference: 2.75" Weight: 4.9 oz.