Thule Aion Travel Backpack 28L/32L | Dark Shadow/SlateThe multifunctional Thule Aion 28L backpack expands from a day pack to a 32L travel backpack for 15% more packable space, and has a convenient divider to separate your everyday items from your active gear. FEATURES: Expands from a 28L daypack to a 32L travel backpack for 15% more packable space The easy to clean TPU divider keeps items organized and prevents odor, moisture, and dirt from spreading to the rest of the bag, it also tucks away when not in