Worn a few times, no box, smoke free, pet free home Set on performance cushioning engineered to kick up your pace, this ultra-lightweight running shoe propels you reliably through training runs and races alike. Propulsive, protective PROFLYâ„¢ foam absorbs the impact of every heel strike and rebounds to push every toe-off powerfully forward. Engineered jacquard mesh, featuring recycled content, keeps the upper breathable when the intensity heats up, while a gusseted tongue molds to an anatomical fit, and an extended heel pull gets you in and out of this lightning-fast style with equally impressive ease. • Speed: transforms impact absorption into propulsive energy with ultra-lightweight cushioning • Energy return: transforms every heel strike into responsive, explosive forward movement • Lace-up style • Removable, cushioned insole allows for custom orthotics