Questions about this item:

• Weatherproof Protection: Waterproof, 10,000mm-coated fabrics, welded, all-weather zippers and heat-taped seams.
• Integrated Hydration: Dedicated, easy-access compartment for included 3.0L Big Zip SL reservoir, options for top, bottom, left or right hose routing, lightweight reservoir suspension toggles, and locking hose clips.
• Clean Design: Precisely what you need and nothing you don't to keep things light and simple.
• Refined Fit: 20 or 22-inch BioCurve back panel and ergonomic shoulder straps with soft, stretch-woven surfaces.
• Essential Features: Removable back compression/storage panel and ice axe loop zippered waist pockets internal organizer welded light loop/lash points reflective detailing.