When On Running burst onto the scene, it was their CloudTec cushioning system that really caught the eye of consumers. This novel approach to advanced cushioning has unique engineering along with aesthetics. The Swiss maestros are back with a much anticipated release, enter the Cloudmonster Hyper. The Monster Hyper features a dual density midsole with Helion HF hyper foam in the top layer for superior impact absorption and Helion super foam in the bottom layer for maximum energy return. This combination ensures a balance of plush, protective cushioning, and peppy responsiveness, ideal for confidently tackling any distance. The Speedboard has been removed to encourage faster post-training recovery and to lessen the weight, with the Helion HF hyper foam providing all the bounce you need. High-grip laces woven with silicone and reworked eyestays keep you locked in place. Plus, a microfiber upper (made from 85% recycled polyester) delivers breathability and seamlessly molds around the foot to create a personalized fit.