Carrying on the Osprey legacy, the customizable Xenon 70 for multi-day backpacking offers impressive load transfer, saving your back and shoulders. AirScape backpanel features three sections of ridged foam and a central air chimney for increased ventilation. BioForm CM A/X hipbelts heat-moldable laminated foam and internal seams provide a personalized fit and relieve hipbone pressure. Ospreys certified Custom Molding available in most stores-check your local REI store for a custom hipbelt molding oven. Women-specific hibbelt is ergonomically contoured for a womans body shape. Lightweight, removable sil nylon AquaSource hydration sleeve converts to a hydration pack for day-tripping reservoir sold separately. Removable top lid has one compartment with a waterproof zipper and lash-on points converts to a lumbar pack with AirScape lumbar pad. ReCurve suspension-with an HDPE framesheet, two aluminum stays and dual aluminum rods-optimizes fit and load transfer. Running down the sidewall, ReCurve aluminum rods create a pretensioned lift mechanism that resists sag and actively transfers load to hips. Load-lifter straps act with ReCurve rods and framesheet to draw load snug against your back for increased control and stability. Gender specific, the interchangeable, laminated dual-density shoulder straps adjust easily to fit a womans shoulder and chest contours. Complete access to main compartment is offered via top-loading and zippered side openings. Externally accessible, wide-mouth sleeping bag compartment accommodates large synthetic bags. Side pockets, one zippered and one mesh, keep essentials handy and secure and double as slots for hauling skis A-frame style. StraightJacket wings compress the contents of the pack, whether its full or nearly empty, without sag or load distortion.