Get the perfect running companion with these men's Flyknit Racer Trainers from Nike. Built with a single-layer Flyknit upper that wraps your foot in a second skin fit for supreme lightweight support. The adaptive dynamic Flywire technology ensures a custom-like fit, while providing a secure lock-down from the first mile to the last. A waffle rubber outsole with diamond pattern has been designed with runners in mind, offering durable traction whether you're on the streets or in the hills. Complete with the iconic Zoom Air unit for ultra-responsive cushioning to provide a smooth ride.