The Altra Rivera is built for those who have an open mind and crave the open road. This training shoe is ready for all your road-running needs. The soft responsiveness of an Altra Ego™ midsole pairs with the light and breathable engineered mesh upper for a great fit and feel. The Neutral InnerFlex™ midsole technology increases flexibility and performance. This shoe has a zero drop as their Balanced Cushioning™ platform places the heel and forefoot the same distance from the ground, which encourages low-impact landings.