42 100% Majority Leather w/ Synthetic Rubber sole Premium leather and 100 percent recycled polyethylene terephthalate fabric upper for durable, long-lasting wear Rubber overlay for abrasion resistance and protection Convenient hook-and-loop closure for optimal fit and adjustability 100 percent recycled polyethylene terephthalate mesh lining is comfortable, breathable and environmentally conscious "Does it Fit?" sockliner allows you to get the right fit every time