Our first SUSTAINABLE sneaker, the Generation ZEROGRAND II is created from the ground up using materials made from nature. This versatile style is?designed with a minimum of 25% naturally derived or recycled content by weight and features our patent pending FlowerFoam??sole.?Made with dandelions. Yes, dandelions, our?FlowerFoam??sole is created from a minimum of 25% natural dandelion rubber and provides all the lightweight cushioning to keeping you going and growing all day, every day. A thoughtfully considered upper design includes vegan microfiber suede made with 21% recycled content and reconstructed felt fabric made with 85% recycled plastic bottles.100% recycled rPET laces.Our FlowerFoam? sole is made from a minimum of 25% natural dandelion rubber and provides lightweight cushioning to keeping you going and growing all day, every day.