Women's Cloudmonster HyperDesigned by athletes. For athletes. The lightest shoe in the Cloudmonster family, its dual foam midsole combines max cushioning with max rebound. What do you get if you combine extreme CloudTec with Helion HF hyper foam? Maximum cushioning with a kick. A dual foam midsole maximizes cushioning, while Helion HF in the forefoot absorbs impact for a rebound that will energize every stride. It's the same foam we use in our top racing models like Cloudboom