Durable Structure Made from a quality reinforced 600D Oxford cloth. This material provides strong tearing resistance and greater durability than 420D, with a fabric that offers waterproofing, moisture permeability, breathability, insulation, and wind resistance to protect contents. Waterproof and Durable Features frequency welded seams, hidden waterproof zippers, and double hookandloop zipper flaps. The exterior may feel wet in rain, but rainwater will not penetrate into the interior. Large Storage Space Available in three sizes to provide large capacity for your luggage. The soft side design accommodates oddshaped items and allows the bag to be easily folded for storage when not in use. Aerodynamic Design The roofmounted bag has a streamlined body that reduces wind resistance and power consumption, improves truck stability, and lowers energy use and noise for safer journeys. Use scenarios Road trips or longdistance travel with a truck: add extra luggage capacity so you can carry more gear without crowding the cabin. Outdoor adventures: transport bulky camping gear, tents, sleeping bags, or sports equipment on the roof for easy access. Work or moving tasks: relocate large, irregular items that don't fit in a standard cargo area, while keeping contents protected from the elements.