Men's Cloudboom MaxMade for marathon training. The CloudTec cushioning system delivers a fast ride with Helion HF hyper foam for energy return and lasting comfort. Key features Weight: 296. 0g CloudTec cushioning system engineered for fast runs Double layer of Helion HF hyper foam for energy return Glass fiber infused Speedboard for efficiency and support A lightweight, breathable mesh upper Padded heel design for comfort over long distances Supportive upper molds and