Satisfy your long distance running impulses with the natural feel and lightweight, yet stable design of the Altra Women's Impulse Running Shoe. The Zero Drop platform encourages a more natural, low impact strike that properly aligns body posture and strengthens lower leg muscles. And unlike the narrow toe boxes of most running shoes, its Footshape toe box allows room for your toes to spread out to enhance comfort and balance. The friction free, lightweight, and breathable upper prevents hot spots and improves comfort. A responsive, high rebound EVA and A Bound blend midsole cushions your every step and propels you into your next stride. Varus Stability Wedge Technology provides flexible stability to prevent early and late stage foot collapse, and Stabilipod technology acts as a stabilizing tripod to prevent over pronation. It's finished off with a lightweight FootPod outsole that maps the tendons and bones of your foot to provide a natural, easy flex that allows your foot to move naturally.