On Ultra Vest Pro Size:X-Small working together with the Dual

working together with the Dual Density midsole to provide your foot with optimum support

this lively pavement pounder is built for performance and ready to race

Highly Responsive Ride: The CloudTec cushioning system has been engineered for a highly responsive ride

83% RECYCLED POLYESTER 17% SPANDEX

On Ultra Vest Pro Size:X-Small working together with the DualThe next gen of On's pinnacle trail running vest! With a 10L dry pack and 2 500ml Hydrapak flasks for hydration. Optimized performance: Featuring improved bottle and pocket positioning for a better performance. A zip pocket at the front for easy access to your phone. And a new zip pocket at the back to safely store essentials, without bouncing or bunching. Athlete validated design: Tested and loved by elite trail athletes, this vest is up for every