Thule Crossover 32L Backpack - TCBP-217 The roomy main compartment can house a change of clothes, books and bulky items The Shove-it Pocket? with compression straps provides extra external storage for a jacket or paper A bottom zippered pocket can easily accommodate your laptop?s power source or other small accessorie Front bulk storage pocket for easy access to your in-transit necessities Side external pockets stretch to fit around your water bottle