The ultimate shoe for the active woman who demands performance, fashion and exceptional comfort. A shoe that she can be proud to wear at the gym, but won't want to take off for the rest of a busy day. Aetrex Xspress Fitness Runners combine innovative technologies with stylish, fun upper designs for a shoe that captures your spirit and allows you to look and feel your best. The Aetrex S last is semi-curved and designed to hold the rearfoot in place while providing exceptional forefoot freedom. The innovative Skylight TPU Heel Counter and Footbridge offer unwavering stability and support. The Donut heel design dramatically alates stress from the calcaneous and the slip-resistant rubber pods provide traction and durability.