With improved cushioning and a lighter weight, this instant classic running shoe just keeps getting better. New full-length Infinity Wave plate designed to increase cushioning and comfort while supporting the foot. Lighter U4ic midsole reduces impact shock and efficiently returns energy for a smooth running transition. Dynamotion Fit™ comfortably locks your foot in place while reducing the amount of stress the shoe places on the foot. Durable rubber outsole delivers versatile grip on a variety of surfaces. Wt. 11.9 oz.