Mystery Ranch Bridger 55 Women'sDesigned for the female seasoned 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.