A rugged, expandable, and brilliantly accessible carry-on travel backpack driven by a simple truth: No Two Trips The Same. Features top, side, front and rear access via weatherproof #8 and #10 UltraZips, which can withstand decades of use thanks to their proprietary abrasion-resistant thread. Weatherproof 400D nylon canvas shell, 900D bottom liner Expands to gear-hauler Collapses to day bag Meets international carry-on size requirements Padded laptop + tablet sleeves Main cavity divisible into 2 compartments Quick-access pockets for keys, glasses, passport Hugely expandable side pockets for water bottles, tripods Tuck-away shoulder straps and hip belt 360-degree grab handles Cleverly concealed external carry straps