On Ultra Vest Pro | 10L | Black

The next-generation of On's pinnacle trail running vest. Includes two 500 ml Hydrapak® flasks for hydration on the move.

• Two 500 ml Hydrapak® flasks included
• Safety whistle
• Innovative closure system for no-budge performance
• Large side pockets for essentials
• Removable seam-taped dry pack with water-resistant zipper
• Front zip pocket for easy access
• Back zip pocket for added storage space
• Weight: 300g

Optimised 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 On's elite trail athletes, this next-gen trail vest is up for every challenge. With an improved performance fit to reduce bouncing. And increased durability in areas of high strain, to withstand demanding conditions.

Packed with essentials

With two BPA-free Hydrapak® flasks and a removable seam-taped dry pack with a water-resistant zipper, this vest has it all. Think: additional daisy loops and modular attachment for your Ultra Quiver. Plus, a safety whistle to call for help.