Cloudmonster.

The On Cloudmonster is one of the most distinctive performance running shoes in the On lineup, engineered for maximum cushioning, explosive energy return and a bold, statement-making design. Designed for runners who want a highly responsive ride with soft landings, the Cloudmonster features oversized CloudTec® elements that deliver extreme bounce and smooth forward motion. Built with Helion™ superfoam and a powerful Speedboard®, this model transforms impact into propulsion, making it ideal for long-distance runs, tempo sessions and daily training. Despite its maximalist sole design, the Cloudmonster remains surprisingly lightweight and agile, bridging the gap between high-performance running technology and modern athletic style.

The upper of the On Cloudmonster is made from breathable engineered mesh that provides structure, flexibility and comfort during extended runs. The exaggerated CloudTec® cushioning units compress upon impact and rebound quickly, creating a dynamic, spring-loaded feel underfoot. The Speedboard® enhances forward momentum and stabilizes the stride, while the durable rubber outsole ensures traction on both dry and wet surfaces. With its futuristic silhouette and performance-driven construction, the On Cloudmonster stands out as a premium running shoe built for athletes and everyday runners who demand comfort, support and speed in one package.

How does the On Cloudmonster fit?

The On Cloudmonster generally fits true to size. It offers a secure midfoot lockdown with adequate space in the toe box for natural movement during runs. The engineered mesh upper adapts well to most foot shapes while maintaining structure and support. Runners with wider feet may prefer going up half a size for additional room, especially for longer distances. For most wearers, however, choosing your regular size provides the best balance of cushioning, stability and performance.