The result of collaboration with ultra runner Scott Jurek, the Ultimate Direction SJ Ultra Vest offers the best weight-to-capacity ratio of any hydration pack on the market weighing a featherlight 7.5 ounces (13 with bottles) and offering 9.2 L of storage space for apparel, accessories and essentials. The SJ Ultra Vest packs dual 20 oz bottles in front for quick access to help keep you hydrated on the trails.
*Click 'Product Videos' below for more details; see Ultimate Direction Video Vault for more info about development and sizing.
||25 - 31"||31 - 38"||38 - 43"|
*Measure in inches around fullest part of chest