Description Product Description From Everest to Rainier JanSport`s Pro Series packs have been carried up the world`s most challenging peaks. These packs are engineered to perform with award-winning innovation for design fit and comfort for every alpine adventure.FEATURES: Arch Rival suspension system with a tubular aluminum premiter stay for lightweight flexible load distribution Versa-Wing system converts a large mesh compartment into two small gear pockets with a quick clip Biovent shoulder straps with hydration tube management Fully padded EVA back panel with a quick access hydration compartment Molded EVA padded hipbelt with gear loops Large panel-loading compartment provides for quick packing and access to gear Dual hypalon lashing ovals Front quick access pockets Side v-compression straps Finger loop zipper pulls Bottom lashing webbing Dual gear loops Web haul handBioventExtremely lightweight molded foam shoulder