The On Running ‘Cloud’ running trainers are the Swiss brand’s best-selling model and designed for all day performance. Zero-Gravity foam and Cloudtec® outsole provides soft and cushioned landings. Reshaped Cloud details and a moulded heel provide snug and secure fit. The Speedboard™ transforms energy on landing into forward motion. A speed-lacing system enables your foot to slip in and out with ease. Breathable, anti-microbial mesh keeps your feet feeling fresh and no-sew taped reinforcements provide the ideal fit. Upper: Textile. Sole: Synthetic.