On Running Cloudswift 4 Trainers combine CloudTec cushioning and Helion superfoam for a responsive, protected ride on hard urban surfaces. Built for city running, they pair breathable mesh with a propulsive Speedboard to support daily runs and high-mileage wear. Key attributes: Gray | Grey Black | Mesh | Breathable upper | CloudTec impact cushioning | Helion superfoam for responsive energy return | Durable rubber outsole with urban traction | Traditional lace-up closure for a secure fit | Sock-like construction for a close fit | Hidden Speedboard for forward propulsion | Knitted-style mesh upper | Ribbed midfoot support sections | Visible CloudTec pods with yellow-green detail | Silver-grey On logo and Swiss flag on heel | Heel pull tab | Dimensions & fit: Snug, sock-like fit | Composition & care: Upper: Textile (mesh) | Midsole: Helion superfoam | Speedboard: Nylon | Outsole: Rubber | Lining: Textile | Wipe clean with a soft cloth.