The Open Road 6X beaver fur blend hat by Stetson is a great looking hat from the Classic Collection. This hat features a 2 3/4" brim and a 4" crown. The edge of the brim is bound for a unique style. The X's in the hat are used to represent the quality of the hat. The exact percentage of beaver fur is only known by Stetson, as that is a secret formula that helps Stetson remain the leading manufacturer in headwear.