Designed to make speed available to everyone, the On Cloudflow 5 in Fog/Eclipse takes inspiration from their pinnacle race shoes, making it suitable for dedicated runners and casual runners alike for speed work and fast training sessions. The Cloudflow 5 features a generous layer of Helion HF foam directly below your foot, providing lightweight cushioning with excellent energy return. Beneath this, a glass fibre and nylon blend Speedboard offers an extra boost of energy. The Cloudtec pod cushioning utilizes Helion foam, and the shoe's rocker design is optimized to enhance forward motion for effortlessly fast miles. The outsole offers durable traction with significant rubber coverage. The engineered mesh upper provides breathable containment for optimal performance. Weight: 270g (US Men's 8.5). Stack height: 36mm (heel) / 28mm (forefoot). Heel offset: 8mm. Features Cloudtec cushioning with Speedboard, and a woven engineered mesh upper with a dual-density midsole including Helion HF on top and Helion below.