SAFETY COMES FIRST - RoofPax is the ONLY brand that produces its Car Rooftop Cargo Carriers for maximum safety with the patented 4-door hook straps (included). RoofPax is the safest and most secure Car Roof Cargo Bag on the market. 100% WATERPROOF POLYESTER MADE - Unlike competitors' bags made of PVC material, RoofPax is crafted from premium-quality polyester, tested and approved for its superior waterproof capabilities. Designed for durability and long-lasting performance in all weather conditions. DOUBLE ZIPPERS FOR EXTRA PROTECTION - This car rooftop cargo bag features double waterproof zippers, dual-seam technology, and a water-repellent coating for maximum weatherproofing. Includes 10 Velcro straps to prevent strap flapping, ensuring ultimate security during your journey.