Shoes in very good pre-owned condition with no noticeable flaws or excessive wear. Shoes have been hand-washed and sanitized. Details: Comfort + sustainability? Yeah, Kizik did that! The Madrid is fashioned with an environmentally friendly knit upper made from 100% recycled plastic bottles. It's got a four-way stretch that makes it breathable (goodbye, sweaty feet!) They call it Eco-Knit. You'll call it your new favorite shoe. * HandsFree Labs® Technology * Flex Foam™ Outsole * Traction Grooves * Removable & Washable Insoles * Breathable Knit Upper * Roomy Toe Box