When speed work calls, the Hyperion Max answers. This elite trainer is ideal for the toughest, fastest workouts. Featuring lots of lightweight nitrogen-infused DNA FLASH cushioning in a strategically constructed midsole made to help runners train fast. Style -??1103901D078 ?? When speed work calls, the Hyperion Max answers. This elite trainer is ideal for the toughest, fastest workouts. Featuring lots of lightweight nitrogen-infused DNA FLASH cushioning in a strategically constructed midsole made to help runners train fast. Style -??1103901D078 |