Twisted X Men's Zero-XProtect the planet while also getting comfort. Twisted X's Zero X shoes are made from environmentally conscious non traditional materials so you can feel good in them as well as about them. Upper is a combination of ecoTWX material and leatherTWX recycled leather EcoTWX material is made from recycled plastic bottles and uses an average of 13 bottles per pair Elastic laces. Also features elastic gore panels on the tongue that allow the shoe to be worn