Approximate boot shaft height: 8"; Twin-faced grade A sheepskin with suede toe and heel guards; Removable and replaceable comfort system insole is made of sheepskin, latex and foam for "ultra" comfort with a Mylar sockliner for warmth; Molded rubber lug cup sole for strength and durability on rugged surfaces; Color:Brown; By UGG® Australia; Imported. The Ultra Short is designed for durability, comfort and years of wear. Made with top-of-the-line twin-faced sheepskin, this boot features a removable and replaceable insole that has the ability to keep your feet warm.