ecoTWX material upper. ecoTWX material is a lightweight, carbon positive, and durable eco-friendly material made from recycled water bottles. Each pair of shoes made from ecoTWX material removes an average of 13 plastic water bottles from landfills and oceans. 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. (NO ORIGINAL BOX)