Weight: 12.6 oz Dynamotion Fit: Reduces lateral stress for optimal fit AP +: Increased rebound and a "bouncier" feeling, extending the cushion durability, while maintaining the light weight performance SmoothRide: Engineered approach to minimize the rapid acceleration and deceleration of the foot during transition, creating the smoothest ride possible Gender Engineering: Maximizes performance by tailoring footwear to the separate needs of men and women