The longer the trip you're planning is going to take, the harder it becomes to go lightweight, what with all the extra gear and food you'll need to pack. Unless, of course, you're equipped with the intelligent design of the Gregory Women's Octal 55L Backpack. This multi-day pack helps you maintain your desired base pack weight while adding attic space and load support for your puffy layers, extra calories, and emergency shelter. And don't worry, comfort and toughness aren't compromised either. Made with a durable nylon fabric, the Octal ensures balanced, cool comfort with its ventilated suspension system and moisture-wicking backpanel to prevent soggy, aching backs, while the padded shoulder harness and extra supportive hipbelt boast targeted comfort zones to let the miles melt away. Then, a supportive lumbar pad in the hipbelt helps conserve your energy with its load transfer throughout multiple days on the trail. The custom fitted rain cover stows in the top pocket for quick access when dark and ominous rain clouds roll in, and an exceptionally high number of zippered pockets and gear loops organize and carry all of your unwieldy or smaller items, from ice axes and trekking poles to multiple water bottles and pairs of sunglasses.