Features the "BFS" system for simple adjustments to the lower back fit while running. Employs the new detachable high-mount fit mechanism "T2 High Mount Fit 2.0," which pulls the front cord to compress the back storage and push it upwards, enhancing the fit around the upper trapezius muscles. The main storage features a "reverse slant" design to prevent items from falling and promote a high-mount position. Capacity is approximately 10 liters (combined from 4 front pockets and 3 back pockets). Equipped with the "T2 Multipurpose Holder" on the lower back for attaching poles and shells. Flask pockets with compression cords to prevent soft flasks from swaying and sagging. Front pockets for storing bulky items such as energy gels, small soft flasks, and headlamps. L-shaped pockets for storing smartphones and valuables. Back pockets for storing small soft flasks and shells. Dedicated shell pockets allow for easy access to a wind shell while wearing the vest. The main back storage is 8 liters (L size). Weight is approximately 300g (L size). Color is Navy.