The first Altra shoe was inspired by and developed with an Altra athlete. Meet the Paradigm 6, a shoe that is blurring the line between support shoe and everyday trainer. Altra Elite Athlete and two-time Olympian Kara Goucher’s input helped take this shoe to the next level, adding an Altra EGO MAX midsole and slimming down the overall design while maintaining its key support features. Balanced Cushioning With a zero-drop construction, your heel and forefoot are placed at the same distance from the ground ensuring comfortably balanced cushioning that promotes efficient low-impact form with each stride. FootShape toe box Enhancing both comfort and stability, the FootShape toe box gives enough room to allow your toes to relax and spread out naturally as you move. Altra EGO dual midsole Combining dual-natured midsole compounds the Altra EGO delivers premium underfoot cushioning with increased energy return snappy ride with forward-propelling responsiveness. GUIDERAIL support system Running through the midsole, the GUIDERAIL adds stability and smoothly guides your foot through the gait cycle for an efficient stride. InnerFlex grooves Allowing your foot to flex thanks to grid-like grooves in the midsole for lightweight speed and enhanced performance.