Kriega Max 28 Expandable Backpack The Kriega Max28 Expandable Backpack carries a maximum of 28 liters of storage, enough to carry a full face helmet so your hands are free once you reach your destination. Three different sections allow you to organize and protect your gear as needed. The waterproof section features a roll-top closure to make sure no precipitation intrudes. It can accommodate a 15 laptop or any sensitive equipment that you need to keep dry. The expandable section uses a heavy duty zipper closure so you can more readily access your gear. The compartment expands from 22L to 28L after you unzip the external expansion. A third section folds down to expose an organizer pocket for easily access smaller EDC. The Kriega Max28 will stow everything you need for a day at the office or everything you need for an overnight trip.