The On Men's Cloudflyer 4 made for all your runs whether it be fast training, a 10K, half marathon, marathon, recovery runs, tempo runs, road running, interval training, and everyday training. Premium comfort even at long distances. The highest quality materials, thicker laces, and the On's plushest tongue. Bigger, dual-density CloudTec®, Zero Gravity Foam in the heel and Helion™ Superfoam in the forefoot combine for soft landings and explosive take offs. A wider platform, a new molded sock-liner, and an external heel counter keep your foot as secure as it gets – no matter what the distance. The shoe contains 90-95% recycled polyester, with a total recycled content of 35-40%.