Thule Aion Travel Backpack 28L/32L | BlackThe backpack for active days or weekends away. The 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