The women's running shoes in flame and frost are the lightest shoe in the Cloudmonster family and feature dual foam midsole cushions, Extreme CloudTec®️ with Helion™ HF for max energy return, forward-rolling, high-grip laces woven with silicone keeps you locked in, Helion™ HF to absorbsimpact and gives maximum rebound, microfiber uppers for breathability, with engineered woven uppers made from 85% recycled polyester.