Work America Mens 6" Farm Closed Toe Knee High Safety Boots Synthetic Synthetic sole Shaft measures approximately 6" from arch Platform measures approximately 0.25 Our twice tanned, leather WORK AMERICA boot is farm-chore tough Full grain leather upper resists water, oil, grease and even barnyard acids Oil-resistant, Nitrile sole is guaranteed to outwear the tough leather upper Padded collar covered with soft, breathable DRI-LEX&#174; lining Velvet-eez&#174; air cushioned innersole