The North Face Chilkat Insulated Boot (Toddler) 100% Synthetic Imported Rubber sole Shaft measures approximately 4" from arch Heel measures approximately 1" Uppoer: Waterproof split suede leather upper Cemented and seam-sealed waterproof construction100 g Heatseeker insulationDual hook-and-loop closure system for easy on/off Bottom: Durable TPR shell and outsole for ultimate winter protection with improved flexibility