On Cloudmonster 3 Hyper LS The On Cloudmonster 3 Hyper LS represents the next evolution in performance training, combining On's revolutionary LightSpray™ manufacturing technology with an even more cushioned version of the Cloudmonster 3 Hyper platform. Designed for runners who want maximum energy return without compromising weight, it delivers an exceptionally lightweight ride for everything from long runs to faster training sessions. Featuring a 45 mm heel stack and 39 mm forefoot stack, the Cloudmonster 3 Hyper LS combines a high-volume layer of Helion™ HF hyper foam with a Helion™ foam chassis and CloudTec® cushioning. The result is a highly responsive yet protective ride that promotes smooth transitions through On's signature rocker geometry, making it an ideal choice for marathon training, long runs and high-performance daily mileage. The standout feature is On's innovative LightSpray™ upper, created by robotic arms that spray a continuous filament directly onto the shoe to produce a seamless, ultra-lightweight upper with minimal waste. This unique construction delivers an incredibly secure fit while dramatically reducing weight, creating the lightest Cloudmonster ever produced. Why You Will Love It LightSpray™ upper delivers an ultra-lightweight, seamless and highly secure fit High-volume Helion™ HF hyper foam provides exceptional cushioning and energy return CloudTec® cushioning and Helion™ chassis deliver a stable and efficient ride 45 mm stack height offers maximum protection for long-distance training Pronounced rocker geometry encourages smooth and effortless forward transitions Remarkably lightweight for a highly cushioned performance trainer Designed for long runs, marathon training, tempo runs and premium daily training Fit & Sizing True to size for most runners Performance-oriented fit with a seamless laceless upper Best suited to runners with low to average volume feet due to the fixed upper construction Technical Specifications Runner Profile Neutral runners seeking a premium high-performance trainer Midsole Helion™ HF hyper foam over Helion™ foam Plate None Upper LightSpray™ seamless laceless upper Outsole CloudTec® rubber outsole Stack Height 45 mm heel / 39 mm forefoot Heel-to-Toe Drop 6 mm Weight Approximately 205 g (Men's US 8.5) Best For Long runs, marathon training, tempo runs and premium daily training How It Differs from the Cloudmonster 3 Hyper While both models utilise Helion™ HF hyper foam, CloudTec® cushioning and a rocker geometry for smooth transitions, the Cloudmonster 3 Hyper LS introduces two significant upgrades. The first is the revolutionary LightSpray™ upper, which replaces the traditional engineered mesh with a seamless, robot-produced construction that dramatically reduces weight while delivering a secure, race-inspired fit. The second is an increase in stack height from 39.5 mm / 33.5 mm to 45 mm / 39 mm, providing a greater volume of Helion™ HF foam underfoot for an even more cushioned and responsive ride. Despite the additional cushioning, the LightSpray upper makes the Hyper LS significantly lighter than the standard Cloudmonster 3 Hyper. Staff Picks Jamie recommends The Cloudmonster 3 Hyper LS is one of the most impressive examples of innovation I've seen in a training shoe. The additional Helion™ HF foam delivers a softer and more energetic ride than the standard Hyper, while the LightSpray™ upper keeps the weight incredibly low. If the laceless fit suits your foot, it's a fantastic option for runners looking for maximum cushioning without sacrificing speed.
