What Our Gearhead® Experts Are Saying: "The Cloudswift 4 is my everyday trainer when I’m pounding pavement. It’s lightweight and super breathable, which is a huge plus on warm days. The dual-density Helion foam gives me soft landings without sacrificing energy return, and the rocker shape helps me roll through each stride effortlessly." We lace up the On Running Cloudswift 4 Running Shoe when our day calls for miles on hard pavement, busy city blocks, and everything in between. Built for everyday road runs and urban missions, the Cloudswift 4 combines a fresh, modern design with tech-driven performance. The breathable one-piece knit upper wraps our foot in sock-like comfort while perforations at the toe keep airflow high. An updated cage construction hugs the midfoot, locking us in without pressure. Underfoot, the dual-density Helion™ superfoam midsole gives us the best of both worlds—plush landings up top with a firmer layer underneath for snappy push-offs. The integrated Speedboard® and rockered geometry work together to smooth our stride and keep us rolling forward. Whether we’re getting in early training miles or heading out for post-run errands, the Cloudswift 4 keeps us moving in comfort and style.