Harness system distributes weight and is low-profile. 35L capacity is compatible for carry-on. 1000D polyester is TPU-coated, 840D ballistic nylon paneling. Main compartment has suitcase-style, full-wrap zipper opening. Right side has large zippered mesh compartment. Left side has subdivided zippered mesh compartment. Padded sleeve for laptop and tablet. Main compartment has shortcut zipper. Top zippered pocket and security YKK zippers. Carabiner lash loops and tuck-away straps. 4 reinforced grab handles. Rain cover included. Removable waist belt for 35L size.