UGG Australia Womens Briana Boot Sheepskin Shaft measures approximately 7.5" from arch 17mm Twinface upper Cushy foam for extra comfort. Covered with a 17mm UGGpure sock to naturally wick away moisture, keeping feet warm and dry. Lightweight and flexible molded EVA with patent protected outsole tread design. Metal rope button and nautical charms 7 1/2" shaft height