Take a jog on the island in this On Women's Performance Running Cloudswift 4 Shoes in Frost / Blonde. This Performance Running Cloudswift 4 Shoes by On features a single-piece knit upper and perforated toe box for maximum airflow, dual density midsoles made with soft Helion superfoam on top and denser foam on bottom for a propulsive push off and a new nylon speedboard for an energetic ride.