Mizuno Wave Ronin 5 - Men'sThe Mizuno Wave Ronin 5 racing flat features a unique combination of cushioning and grip, offering you more confidence the faster you go. A snug, comfortable fit offers superior flexibility to let your foot perform naturally. AIR Mesh™ upper provides the utmost in breathability and comfort. AP midsole is lightweight and responsive, yet durable and cushioning. Dynamotion™ Fit technology relieves the stress the foot naturally places on footwear, eliminating distortion for the perfect fit. Mizuno Wave™ and SmoothRide™ technologies are engineered to provide cushioning and stability. G3 sole outsole design offers lightweight cushioning, durability, and flexibility. X-10™ carbon rubber has been added to high impact areas of the outsole for increased durability and better traction at heel strike. Wt. 6.9 oz.