All-around lockdown, comfortable impact protection, and reliable traction. This is a go-to trainer for athletes of every shape and size. An adaptive fit system works with Flywire cables to lock your foot down during every workout. Nike's dual fusion cushioning features a softer foam core for shock absorption and a firmer foam carrier for increased stability. Outsole features forefoot grooves so your foot can bend farther. Full-length traction pattern provides strong grip on multiple surfaces. Wt. 9.5 oz.