; Meets U.S. Airline Carry-on size requirements.; Large top-load main compartment with ventilation/drainage grommets, can hold helmet and ski or snowboard boots up to size 13.; Roomy top lid with large zippered pocket for additional gear.; Zippered front accessory pocket holds hats, gloves and tools.; Dual zippered pockets on the sides can hold 1000ml water bottle.; Adjustable padded backpack straps.; Add-A-Bag system on the back panel allows this bag to slip over the handle of a larger wheeled bag.