The road, revisited. The Rocket X 2 is a cutting-edge product designed for elite runners, it's been amped up with careful attention to construction. We've reworked the geometry of our carbon fiber plate, housing it between two layers of an all-new, high-performance, ultra-responsive foam. Featuring an engineered synthetic mesh upper for a snug fit, this advanced shoe is equipped with a sleek gusset and an instep cage for running-ready support.