NWT Camel Champagne Ugg Ava Leather Shearling Boot. Ugg Australia Ava Boots. Rubber Sole and Heel. Shaft measures approximately 15.5" from arch. Leather and sheepskin outer and inner. ¾” medial zipper/ memory foam insole/ Leather and sheepskin insole lining. 15 ½” shaft height / 3” heel. Perfect for winter and fall. Your must-have cold weather boot. Complete all of your fall fashion and autumn style looks with this gorgeous, warm, cozy and sexy heeled boot. Price firm unless bundled.