This hat has been hand measured by our team. The exact measurements of the hat sizes are:S - 55 - 55.5cmM - 57 - 57.5cmL - 60 - 60.5cmXL - 61 - 61.5cm This is one hat that will last for years to come. The high quality Stetson Cruiser Crushable Wool Felt Fedora Hat is strong, durable, crushable and packable for travel. You will feel relaxed and confident knowing you own a top caliber hat. The leather band accents the hat very nicely for a subtle accessory.