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. Removable insole 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 FSC Tencel® lyocell upper/synthetic lining/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