Now with additional features and lighter than ever before, the Ultra Pro Vest is even better for long distance training and racing. Available in multiple sizes and equipped with two Quick Stow flasks, the Ultra Pro continues to put comfort above all else. Made with our new 3D micro-mesh, the updated Ultra Pro offers increased comfort and ventilation, additional front and back reflectivity, simplified dual sternum strap adjustability and a removable safely whistle. It also includes even more front cargo storage for easy access to fuel and a secure zippered pocket for your phone. The stretch overflow pockets have been updated for easier access to extra layers or essentials and it can accommodate a 1.5L reservoir for longer self-supported runs.