A very high-quality roof bag made of double-layer PVC that is completely waterproof and dustproof. The front of the bag is built aerodynamically, allowing for minimal wind resistance and less external background noise. The inside of the fabric has a double weave to strengthen the fabric and resist load and tearing over time. All seams of the bag are welded, ensuring the bag is completely waterproof against rain. A zipper cover with Velcro to prevent any chance of dust or water entering the inside of the bag. The straps and fabric of the bag are UV protected, resistant to extreme weather conditions. The roof bag comes with an anti-slip car surface and prevents the bag from moving on the roof of the vehicle and prevents increased wear of the bag, and also helps prevent scratches on the roof of the vehicle.