leather-and-synthetic Made in the USA or Imported DURABLE – ecoTWX material and full-grain leather for increased durability. – ecoTWX material is a durable, material made from recycled water bottles; every pair of shoes made from ecoTWX material uses up to 13 recycled water bottles. EASY TO CARE – Removable, moisture-wicking, and machine washable SD footbed. NATURE PREESERVING: 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. COMFORTABLE: Dual-density compression-molded EVA midsole; molded rubber outsole provides added durability.