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!) We 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 Retired color Good preloved condition, no visible flaws. Same or next business day shipping Bundle with other items to save on shipping Offers welcome! Tags: comfortable, slipon, athleisure, athletic, workout, activewear, breathable, sporty, gym, performance, outdoor, running, jogging, walking, cycling, bicycling, peloton, weight lifting, track, field, practice, yoga, trail, lilac, lavender