Get ready for life in the fast lane. A tip-of-the-spear product tuned for race day, the Cielo X1 3.0 delivers our lightest super shoe to date. Ultra-light and unquestionably snappy, weve shaved significant weight since launching our last iteration. A must for speed seekers, this pace-pushing racer enlists a propulsive carbon fiber plate, ultrasoft PEBA foam, asymmetrical lacing, and a grippy outsole for ultimate traction when chasing those PRs.