On’s LightSpray Cloudmonster 3 Hyper Review: A Glimpse into the Future of Running Shoes
On’s LightSpray Cloudmonster 3 Hyper, released in early 2025, has sparked significant interest in the running community for its innovative upper material and performance capabilities. The shoe, which debuted with the LightSpray technology in late 2024, combines lightweight design with a unique, translucent upper that stands out in a crowded market. According to On’s official website, the LightSpray material is a “robot-spun, silly string-like fabric” designed to enhance visibility and aesthetics while maintaining durability.
LightSpray Technology Explained
The LightSpray upper, first introduced in On’s Cloudboom Strike model, uses a seamless, glueless construction that reduces weight and improves flexibility. This technology was later adapted for the Cloudmonster 3 Hyper, a super trainer intended for long-distance runs. According to a 2024 report by Runner’s World, the upper’s translucent design not only adds visual appeal but also allows for better breathability, a key factor for runners in warmer conditions.

The Cloudmonster 3 Hyper features a 45mm foam stack, combining On’s Helion HF hyper foam for energy return with standard Helion foam for durability. The shoe’s 5mm drop and rocker shape are designed to promote efficient foot movement, while the outsole provides grip without excessive rubber, contributing to its lightweight profile. On claims the LS model is 1.7 ounces lighter than the standard Cloudmonster 3 Hyper, making it a compelling option for runners seeking performance without bulk.
Performance and Fit
Reviewers, including Men’s Health senior editor Brett Williams, noted that the LightSpray upper is “light and flexible” but initially raised concerns about fit and lockdown. Unlike traditional laced shoes, the LS model uses a laceless design, requiring users to adapt to a different method of securing the foot. Williams reported that while the initial learning curve was present, the fit ultimately provided adequate support for various running conditions.
Testing revealed the shoe’s versatility. Despite lacking a carbon plate, the combination of responsive foam and lightweight construction made it suitable for both short, fast sessions and longer, lower-intensity runs. However, some users expressed concerns about the upper’s transparency, which can reveal sock logos and potentially detract from the shoe’s aesthetic appeal. On’s website acknowledges this issue, advising runners to “choose socks carefully” to maintain the shoe’s visual integrity.
Price and Market Position
Priced at $280, the LightSpray Cloudmonster 3 Hyper is positioned as a premium product, aligning with On’s strategy to blend cutting-edge technology with high-performance design. This price point places it above most standard super trainers, which typically range from $180 to $220. According to Sports Illustrated, the cost is justified by the shoe’s innovative materials and durability, though it may be a barrier for budget-conscious runners.
Despite its high price, the shoe has attracted attention from both tech enthusiasts and performance-driven athletes. On’s CEO, François Lucien, stated in a 2024 interview that the LightSpray technology represents a “new era of functional aesthetics” in running footwear, a sentiment echoed by reviewers who praised its uniqueness and functionality.
Conclusion
The On LightSpray Cloudmonster 3 Hyper exemplifies the brand’s commitment to innovation, blending advanced materials with practical design. While its high cost and translucent upper may not appeal to all runners, the shoe’s performance and distinctive style have earned it a place among 2025’s most notable releases. For those willing to invest, the LS model offers a glimpse into the future of running technology, where form and function converge to enhance the athlete’s experience.