Made for elite trail performance, the On Ultra Pro Unisex Vest is meticulously crafted for endurance athletes seeking comfort, utility, and precision fit. Featuring an improved performance fit that conforms securely without restricting movement, this vest is ideal for long-distance trail runs, races, and ultra events. It integrates advanced materials—including lightweight, recycled fabrics—for a barely-there feel while maintaining durability on rugged terrain. The vest is designed for maximum hydration and gear access, with strategically placed compartments and storage options to support uninterrupted performance. Notably, it includes two 500 mL Hydrapak flasks, perfectly secured for hydration on the move. A removable seam-taped dry pack with a water-resistant zipper offers added protection for valuables in changing weather. With a safety whistle for emergencies, large side pockets for quick-access nutrition, and front and back zip pockets for secure storage, this vest balances functionality with elite-grade performance.

Key Features:

• Improved performance fit: Tailored to minimise bounce and enhance stability, the vest conforms closely to the body for optimal comfort across varying terrains, even during extended high-impact activity.
• Includes two 500mL Hydrapak flasks: Supplied with two soft, BPA-free Hydrapak flasks that sit securely in the front compartments, allowing for hands-free hydration while running.
• Safety whistle: Built into the vest for quick access in emergency situations.
• Large side pockets: Generously sized and easily reachable while on the move, these mesh compartments are ideal for storing gloves, snacks, soft flasks, or other gear. 
• Removable seam-taped dry pack with water-resistant zipper: A detachable, protective storage compartment located at the back, designed to shield important items like electronics or dry layers from rain and moisture.
• Front zip pocket: A zippered pocket on the chest offers secure storage for smaller essentials such as keys, ID, or energy gels, with quick access during runs.
• Back zip pocket: An additional zipped compartment at the rear provides extra capacity for stashing layers, maps, or nutrition, keeping the load balanced and secure.
• True to size: Designed to provide a unisex fit that adapts to different body shapes.