Torso length adjusts 4" for a custom fit Hip belt length adjusts 4¡± to position precisely on the iliac crest without aftermarket parts Sleeping Bag Compartment Anatomically molded hip-belt with quick-access zippered stretch pockets High-void meshes on back panel and shoulder harness move moisture quickly S-contoured back panel with HDPE frame sheet and aluminum stay mimics shape of the spine and are customizable for a dialed-in fit ComPACKtor¢â system reduces volume via easy to use anchor/strap system Sculpted lid with body-side zipper access detaches to shed 85 grams Two side stretch pockets hold 1L bottles + trekking poles Side compression straps with quick release buckles convert to front attachment system for sleeping pads, snowboards, snowshoes, etc. Top compression strap and load lifters control and transfer weight effectively Twin ice axe loops and handle straps Internal stretch woven hydration sleeve with righty and lefty hydration tube ports