Go the distance in this lightweight running shoe with a breathable stretch-knit upper, SwiftFoam?midsole and FSC-certified rubber sole. The high-performance midsole maximizes energy return, while an external heel counter and flared, geometric midsole help keep your stride steady. Lightweight: puts cushioning and performance underfoot with an emphasis on streamlined comfort Neutral: provides soft, even cushioning with an emphasis on comfort during any activity Removable insole Tencel?lyocell upper/synthetic lining/FSC rubber sole Tencel lyocell is a sustainably produced fiber made with closed-loop processing Imported Forest Stewardship Council?(FSC) certified, ensuring forest management that preserves biological diversity and benefits the lives of local people and workers This product meets Nordstrom Sustainably Sourced Materials criteria: contains at least 30% sustainably sourced material