Size: 9 GUC Rubber sole Stay Focused: Engineered mesh uppers are light, breathable and ready for the open road Get Comfortable: Altra EGO midsoles provide a responsive yet soft ride and the FootShape toe boxes allow the toes to relax and spread out naturally Push Yourself: Neutral InnerFlex midsole technology increases flexibility and performance Built For You: Bio heels are designed to mimic the natural form of the human heel for a smooth heel-to-toe transition Go Further: Balanced Cushioning platform places the heel and forefoot the same distance from the ground, which encourages low-impact landings