A bag that is attached by straps to the roof of the car on pre-installed roof rails or luggage rack. Since the attachment is universal - the travel bag is applicable on any car. The bag is 44 inches long and 34 inches wide. The volume is 15 cubic feet. The maximum weight of cargo that can be placed in this bag is 30 pounds. The bag is great for carrying bulky but not too heavy items such as camping gear, tents, sleeping bags and more, the important note is that it is waterproof.