The ecoSensitive REI Lookout 40 womens daypack has plenty of pockets for organizing a full days worth of gear and a contoured fit to keep you comfy over miles of trails. Largely made from 100 recycled PET polyester fabric, each pack keeps 26 16-oz. plastic bottles out of landfills Post-consumer recycled PET polyester is tough enough to endure the daily grind. Women-specific fit features shoulder straps positioned closer together and an anatomic shape through bust area. High-density polyethylene framesheet and a single aluminum stay support heavy loads and protect your back from bulky or pointy items. Free-Flow egg crate foam back panel is designed to improve body contact comfort, with channels for air circulation to keep your back cool and dry. Contoured, padded shoulder straps and waistbelt wrap around to offer comfortable support under pack load. Internal sleeve accommodates a hydration reservoir of your choice sold separately dual exit ports allow drinking tube to routed on either side of pack. Wide panel opening to main compartment gives you easy access to the contents. Front zip compartment has pockets for stashing and organizing essentials such as money, ID, multi-tool and headlamp. Twin vertical zippered side pockets provide additional storage for often used essentials. Top stash pocket has room for items such as sunglasses or MP3 player. Mesh pocket on waistbelt provides storage for often-accessed essentials lash points on other side of hipbelt wing provide spot to secure GPS or camera case. Side mesh pockets create convenient storage and on-the-go access to water bottle, sunscreen, snacks or small electronics. Front-panel lash points and bottom compression straps let you strap on bulky gear like snowshoes and sleeping pad. Side compression straps let you cinch down loads for jostle-free carrying.