The ArcTeryx Arrakis 50 backpack is a multi-sport crossover intended for skiing, hiking and climbing trips-and its completely waterproof Made with revolutionary 420Advanced Composite Textile VaporTight nylon material to keep contents dry. Top-loading main compartment features a dual-stage rolltop closure system for easy packing and weatherproofing rolltop closure compresses or extends for additional volume. Full-length side zipper and all other zippers feature WaterTight waterproof construction to prevent water penetration. Additionally, all seams are sealed for weather-tight protection. Hydration-compatible design features reservoir sleeve with an exit port for drinking tube reservoir sold separately. Radially formed shoulder straps with an adjustable suspension offer a personalized fit. Hipbelt suspension features a Load Transfer Disc for superior range of motion and easy disconnect from pack. Simply grab hipbelt at center, twist in counter-clockwise direction and belt releases from center disc reverse actions to connect. Large side-access kangaroo pocket and zippered top pocket are great for stashing oft-used items. All molded components and suspension system are laminated and bonded for superior strength. MonoFrame backpanel is thin and light with EVA foam and 2 aluminum stays to create a direct link between back, suspension and bag. An Axio ice-tool holder securely stores an ice axe with a clever, glove-friendly, rip-and-stick fastener. Lash Ladder system on the side and front, with removable straps, accommodates skis/boards, ropes or camping gear.