Keep all of your essentials for class and workouts organized and ready to retrieve with the PUMA Evercat Contender 3. 0 Backpack. In addition to a spacious main compartment, the backpack features a padded sleeve to protect your laptop on the go. Outside, there is a hook for attaching your keys, a zip pocket for organizing small items, dual mesh pockets for water bottles and a sunglasses pocket lined to protect lenses.