Engineered to outpace the demands of urban running, this sock-fit shoe sports a ribbed lacing cage that locks your foot comfortably to the springy foam sole. Durable, high-abrasion rubber in the tread provides superior grip on urban streets, sidewalks and steps—even when they're wet. Cushioning: absorbs impact and distributes weight for consistent, buoyant comfort under each step Energy return: transforms every heel strike into responsive, explosive forward movement Removable memory foam insole Helion™ superfoam cushioning delivers lightweight energy return even in hot and cold temperatures Recycled polyester and textile upper/textile lining/synthetic sole Imported