Twin-faced shespkin uppers with suede toe and heel guards Removable and replaceable comfort system insole is made of sheepskin, latex and foam for ultra comfort. Features a Mylar sockliner for warmth. Molded rubber lug cup sole for strength and durability on rugged surfaces Approximate shaft height: 13" Approximate mid-calf circumference: 12" Available in whole sizes only. If between sizes, please order a ½ size down.