ALTA Rector Fat Boy knee protection pad features a long high-density plastic cap for maximum coverage and protection. 1000 denier Cordura nylon fabric for abrasion resistance. Closed cell memory foam padding provides firm, consistent support without bottoming out. Brushed tricot lining wicks away moisture and keeps out dirt and debris. Wrap-around neoprene butterfly back flaps allow for easy on and off without having to remove your shoes. Heavy-duty elastic straps provide a secure fit. Hook and loop fastening system. It is available in medium size.