With a cavernous 6102 cubic inches of space, the Gregory Denali 100 Backpack is designed for long alpine climbs, week long Alaskan glacier trips, and gear intensive expeditions. It's nearly identical to the Denali 75, but it'll be the better choice if you're leaving civilization behind for a week to ski big lines and climb big walls from a remote basecamp. In order to keep Denali light, Gregory designed the Denali with a lighter 210D nylon fabric and hooked it up with 420D high density reinforcements where they are needed most. A puncture resistant, internally laminated front panel protects against ice axes, crampons, and ski edges, while the 630D high density nylon base saves the bottom of the pack from rock and ice. There's also a dual entry pocket on the front panel that can hold crampons or a shell for easy access.Gregory fitted the pack with its top of the line Fusion Flex Pro suspension to keep it comfortable when weighed down with expedition grade loads. The system is composed of two 7075 aluminum frame stays that can be removed to lighten your load, as well as a sewn in framesheet for additional support and to prevent gear from jabbing your back. A tubular cross stay prevents the bag from collapsing and bunching when weighed down with a heavy load, and the high density EVA foam padding at the shoulders, back, and hip pads ensure a comfortable fit. There's a removable bivy pad concealed in the back panel, and the hip belt can be also removed when you're really trying to go fast and light in the high alpine.The classic top loading design lets you stuff all your gear securely down inside, but Gregory also integrated a full length side slash zip access point for easy access to layers that have been stashed closer to the bottom. A zippered pocket underneath the removable lid is perfect for small items, the stowaway side pocket securely stows water bottles, and waist belt gear loops are perfect for all your rock and ice climbing gear. There's an internal hyd...