This eco-friendly shoe features a 100% recycled polyester mesh upper, lining, and laces with a fluid and stain-repellent finish. It has an All Day Cushioning insole and is 100% non-metallic with cement construction. The lightweight, shock-absorbing FLX Foam? midsole offers comfort, while the slip-resisting Duratread? sole is made from 5% biodegradable rice husk agricultural by-product. The flat bottom design has no defined heel.