The On Cloudswift 4 is built for city runners and all-day movers, delivering a perfect balance of performance, comfort, and sustainability. Featuring an engineered zonal knit upper made from 100% recycled polyester, it provides a snug, sock-like fit while promoting breathability. The dual-density Helion™ superfoam and redesigned CloudTec® midsole offer superior cushioning with a smooth, forward-rolling sensation. A TPU-injected Speedboard® enhances energy return for a dynamic ride, making it ideal for everything from short runs to everyday wear. Lightweight, responsive, and eco-conscious, the Cloudswift 4 lets you take on the city with effortless style and speed. Key features: Weight: 278g New dual-density Helion™ superfoam midsole for soft landings Breathable one-piece upper with perforated toe box Updated cage construction for better midfoot lockdown Nylon-blend Speedboard® for a responsive ride Fresh aesthetic and comfortable fit Rockered geometry for a forward-rolling sensation Responsive daily shoe for road and city running Versatile style for before, during and after a run