It's not hyperbole to say the Altra Women's Olympus Trail Running Shoe is the stuff of gods. This zero drop trail beast snacks on gravel bits when the main course of boulders and burly tree roots is still far away without exposing your sole to all sorts of unhealthy influences, and it's shaped for your lady like foot. Quick dry air mesh lets fresh air tickle your tootsies, sucks away foot sweat, and prevents small twigs and trail residents from creeping inside your shoe. A nice round rubber cap saves your pedicure from premature death. The removable 5mm Contour footbed supports your foot while accepting your natural anatomy and body mechanics. Altra's Natural Ride System includes an anatomically oriented shape and offers toe specific shapes in the outsole to encourage natural movement and efficient body mechanics. The midsole blends dual layer EVA and Altra's A Bound for a responsive ride that still offers impact abatement and softer steps. The 36mm total stack height fends off pointed attacks from below and gives your 50 mile efforts resilient cushioning until you cross the finish line. Trail specific sticky rubber on the bottom still follows the shape of your foot for intuitive feel, but is tacky for traction over treacherous terrain.