On Running Cloudswift 4 delivers a cushioned, responsive ride for city and road running. The update pairs a breathable one-piece upper with a dual-density Helion™ midsole for soft landings and a forward-rolling feel. Key attributes: Black | Eclipse | Engineered mesh | Dual-density Helion™ superfoam midsole for soft landings | Nylon-blend Speedboard® for responsive propulsion | Breathable one-piece/knitted upper | Rockered geometry for forward roll | Front lace-up fastening | Updated cage construction for improved midfoot lockdown | Cushioned removable insole | Perforated toe box | Reinforced side panels | Logo print on heel, side and tongue | Chunky rubber outsole | Dimensions & fit: Weight: 278g | Medium (D) width | Snug bootie construction for a close fit | Composition & care: Outer: Polyester, TPU | Sole: Rubber | Lining: Fabric