From Twisted X®, the Men's Chukka Driving Moccasins feature: Full-grain leather in combination with ecoTWX® material upper  ecoTWX® material is a durable, eco-friendly material made from recycled water bottles In addition to the positive impact of removing plastic water bottles from the environment, for every pair purchased, Twisted X® will plant a tree and help repopulate troubled tree populations in the United States Removable, moisture-wicking, antibacterial and machine washable SD footbed Compression-molded EVA midsole integrated with Twisted X’s patented CellStretch® comfort technology and a nylon/glass fiber shank provide long-lasting comfort, stability and durability Slip-resistant molded rubber outsole provides added durability Imported.