Women's NEWTONA(R) RUNNING GRAVITY IV :: Experience the improved fit and performance of your already favorite mileage training shoe, the newly updated Women's Newton Running Gravity IV. Get more responsiveness and natural feeling strides from the newly modified Flex Zone over the metatarsals and instep. Count on springy comfort that'll keep you on your toes during fast tempo runs or training sessions, and keep feet cool with the highly breathable, lightweight open mesh. Plus, you'll even get the extra stay-seen safety in low light from the Gravity IV, complements of its 360 degree reflectivity.