We designed the Ascensionist 55L pack with enough room to comfortably carry everything you need for an extended stay in the mountains, including climbing with you through every move of your multi-day route. Working directly in the field with our team of climbing ambassadors, we created the Ascensionist's lean, dynamic shape, which carries loads close to your core for climbing precision and support. The clean, stay-out-of-the-way design starts with lightweight yet durable 100% recycled nylon ripstop fabric with a 100% recycled polyester lining, a polyurethane coating and a DWR (durable water repellent) finish for durability and weather protection. Dual aluminum stays offer lightweight support for even the heaviest loads and provide stability for shifting contents; they move and flex with your body to preserve your natural climbing motion. The long spindrift collar has a dual closure to allow the pack to expand or collapse depending upon the load you're carrying. The Ascensionist's exterior has an adjustable ice-axe carrying system that keeps the sharp tips of your tools covered, a removable lid with a zip-closing stash pocket for easy access to small items, and removable compression straps for gear stability and quick options when you need to stow additional equipment. Inside, a handy hanging pocket keeps your easily misplaced items right where you need them. Other features include a three-point, over-the-top rope-carrying system, a burly haul loop, an adjustable sternum strap to accommodate layering and removable hipbelt pads to lighten your load for the summit push.