Biovent shoulder straps and back panel are lightweight, comfortable, and offer impressive ventilation, while two large main storage compartments and numerous organizational design touches help you keep track of your gear. The JanSport Odyssey is a versatile pack that has helpful features whether you're hitting the books or the trail. The Odyssey has a padded sleeve that is designed to hold 3 liter hydration system or a 15 laptop. A deluxe utility pocket with organizer keeps your essentials handy while dual water bottle pockets help keep you hydrated. Additional features come in handy when out in the backcountry. With all of these features, it's no wonder many call the JanSport Odyssey the ultimate daypack.