MATERIALS UPPER Bio-Based Vegan Napa: Cotton 29% + Polyurethane 71% with 68% Bio Based Mass Content. Vegan napa cactus: Nopal Cactus with 50% cotton & 50% polyester backing. LINING 100% bamboo. REMOVABLE INSOLE 60% recycled thermoplastics recovered from the automotive factories, 40% PU foam and 100% organic cotton cover. OUTSOLE 30% natural and 70% synthetic rubber mix. LACES Certified organic cotton. REINFORCEMENTS 65% Recycled thermoplastics and 35% woodchips.