The training shoe for fast intervals. With Helion HF hyper foam and a nylon-blend Speedboard for high energy return.

Now with Helion HF - Inspired by our pinnacle race-day shoes, the midsole features a layer of Helion HF for maximum rebound. Expect a responsive ride with a serious kick of energy return.

Maximum propulsion - Strong yet springy, the nylon-blend Speedboard is infused with glass fibers for powerful forward propulsion. The rockered forefoot further enhances this forward-rolling motion.

Athlete-inspired design - The large logo and eye-catching grip pads on the tip of the toe box mirror the design of our elite-level racing shoes. So now, everyone can look like an On athlete.

- A layer of Helion HF for max energy return and rebound

- Propulsive glass fiber nylon-blend Speedboard

- Engineered woven mesh upper that's breathable and ultralight

- Design inspired by our pinnacle, race-winning super shoes

- Extreme rocker shape for a fast, forward-rolling ride

- Updated toebox design for fast training sessions

- Forefoot grip for added support during the toe-off phase

- Weight: 278g

- Drop: 6mm