Your pack shouldnt weigh more than the gear inside, thats why Big Agnes engineered the Prospector 50L pack, built in two sizes, men's medium and large, to ensure proper fit and ultralight comfort on the long haul. Featuring a compression molded back panel, contoured shoulder straps, foam padded hip belt, and equipped with a unique Hoist Compression system that pulls the load inward and upward for stability and comfort, this 50L pack include plenty of storage capacity and hydration compatibility for overnight trips. At Big Agnes, they've integrated their years of experience, ultralight materials and technical features to deliver a fast and light pack for overnighters, thru hikers and anyone in between who sleeps and plays in the dirt.