Men's Cloudswift 4The road running shoe for city streets gets a performance upgrade with soft Helion superfoam and breathable fabrics. One piece knitted upper The shoe's snug bootie construction is updated with a single piece knitted upper for maximum airflow. The perforated toe box further boosts breathability. Dual density midsole For a cushioned yet energetic ride, the midsole's top layer is made with soft Helion superfoam, while denser foam on the bottom provides a