Kamik Women&#39;s Lunar Insulated Boot,Black,9 M US,Kamik,NK2706" /> 100% Synthetic Rubber sole Shaft measures approximately 8.5" from arch Heel measures approximately 4.5" Platform measures approximately 1" Boot opening measures approximately 12" around Durable Kamik LUNAR outsole provides great traction One strap Velcro closure for easy and secure fit Quilted synthetic leather upper looks great Warm, all-day wear thanks to a faux fur lining Kamik Comfort insole for cushioning