The men's CLOUDFLOW by On is a lightweight, fully-cushioned training and racing shoe. Helion Superfoam combines with Speedboard technology to turn impact into acceleration. The curved heel unit means better hold, durability and comfort. The strategic taping and lacing configuration offer more stability and support when you want to pick up the pace. The Swiss-engineered mesh upper offers lightweight reinforcement and zoned ventilation to help air circulate. Built for the road, these shoes will have you flying through your run.