Log the hard miles in the On Cloudnova Flux. Featuring a lightweight mesh upper made from 100% recycled polyester, these running silhouettes let you run at your highest potential with a clear conscience. The low-cut silhouette with paired black details lets you break records without compromising on style, while the signature heel webbing and technical stitching will have you catching stares and compliments wherever you go. Sporting clean design lines with a comfort-focused upper, the On Cloudnova Flux lets you float to the finish line in stand-apart style. On Cloudnova Flux features: Perforated microfiber tongue made from synthetic suede provides breathability and comfort. Polypropylene Speedboard offers lightweight cushioning and responsiveness. Cloudnova's trademark connected CloudTec outsole and rubber reinforcements deliver durability and traction. Weight: 10.9 oz.