If the big race is just around the corner, the hyperion tempo is the lightweight running shoe that can help you get back on top. Ultralight cushioning and an energy-saving design help you train harder and longer while staying comfortable. Details: very light cushioning energy saving sport fit dna flash is designed with ultralight materials, so none of this weighs you down. All of our cushioning technologies start with dna because they react to the unique characteristics of your stride. The combination of lightweight, responsive cushioning and soft cushioning helps the shoe absorb impact during a hard workout, allowing you to quickly get back into your routine. A breathable stretch upper moves with your foot for maximum comfort. This helps keep your feet cool even on hot days.