Building off traditional Kinvara style, the Saucony Kinvara 4 Viziglo mixes updated high-performance features with original design elements and 360º reflectivity. ViZiPRO reflective materials let your performance shine and help you stay safe and seen in low-light conditions. This lightweight running shoe features a redesigned FlexFilm™ upper, which creates a seamless, natural feel. The upgraded heel PowerGrid cushions your step, creating smooth transitions and a comfortable ride. HydraMAX collar lining and XT-900 outsole with triangular lug design provide a comfortable fit that can grip and grab your terrain. Wt. 7.7 oz.