Slim down for summer trips. The Gregory Z55 carries like a dream so you wont be sacrificing performance for comfort with this lightweight pack for multiday backpacking. Top-loading pack with side access features water-resistant zippers on the side, front and floating removable lid. Large front bucket pocket expands, allowing you to stash and easily access bulky gear. Zippered pocket on top of front bucket pocket offers weatherproof storage. Jet Stream suspension system with AeroTech mesh on back panel helps move moisture away to keep you comfortable. Lightweight, perforated V-framesheet with a single, hollow aluminum-alloy stay provides support and torsional stiffness without a heavy feel. Flexible Auto-Fit harness matches your shoulder slope and angle perforated foam covered with 3D mesh provides airflow and wicks moisture away. 210-denier HT high tenacity double-box ripstop nylon and nylon twill deliver high tear strength and abrasion resistance. Mesh waistbelt pockets are ideal for stashing gels, lip balm, sunscreen or that essential mini-tool.