★Package includes: 4 X Door Hooks+1 X Cargo Bag. Extra Large Capacity: Overall size 44” x 34” x 17” fits most cars and 15 Cubic Feet of storage space provides plenty of room to fully satisfy your needs of any adventure at an economical way, increasing your vehicle cargo space during travels Easy And Safe Installation: 2 installation methods for your convenience! For cars with racks, you can tighten and fix cargo bag with 8 reinforced straps by attaching to racks on your car top; For cars without racks, you can use our 4 safety door hooks to help install this rooftop car carrier (See the description for detailed installation instructions) Durable Quality, Perfect for Travels: Extra long flap helps protect zipper and resist water; Premium material, constructed with three layers can effectively protect against sun, rain, wind and grit, ensuring safe storage during bad weather and making your adventure easy on the way (Please turn the sealed side toward the front of the car) Sturdy Construction: Heavy duty straps, upgraded zipper with a waterproof layer and high quality thick seams with penetration resistant coating help bring extra durability, suitable for packing large over-sized or odd-shaped objects and you don’t worry it will tear off or get scratched during riding Bring Convenience: This roof top carrier is ready to help increase car's overall carrying capacity and bring you convenience during travels