Designed for the seasoned female hiker and first-timer alike. The women's-specific BRIDGER 55 offers the comfort and organization you've come to expect from MYSTERY RANCH while highlighting a redesigned, breathable frame and the new endurance yoke featuring easy hydration access as well as a detachable lid that converts to a hip pack.The BRIDGER 55 offers a feature-rich, weight-conscious, and durable pack that supports your overnight mission. Mystery Ranch - Women's Bridger 55 Backpack