High Sierra Explorer 55 Frame Pack (Pacific, Tungsten) Frame pack is lightweight, ruggedly durable, and plenty roomy, featuring top-loading main compartment with 55 liters of storage space ERGO-FIT shoulder harness, with adjustable load-lifters, is constructed with Vapel mesh Airflow and high-density foam padding; dual, contoured aluminum frame bars can be adjusted to fit shape of your back Constructed of Grid-Weave Duralite, Mini-Weave Duralite, and Duraweave materials; tuck-away rain cover, stored in bottom pocket, also protects pack when checked for air travel Measures 14-by-30-by-eight inches (W x H x D); 3,356-cubic-inch volume and 4.5-pound weight; fits 13-to-18-inch torso range, and 28-inch waist and up Includes limited lifetime manufacturer's warranty