About this item 🚗 UPGRADCE MATERIAL:In order to adapt to various natural environments, we use nano molecular waterproof technology, high-density 840D wear-resistant PVC fabric, water resistance and wear resistance are higher than other materials, so that the rooftop cargo carrier has a longer service life, water resistance and wear resistance, can better protect your items in any weather. 🚗 SUPER COMPATIBILITY:The car roof bag can be installed on any car or SUV with or without a roof rack. The installation and disassembly steps are simple, and it can be folded and stored when not in use, taking up little space. We also set up two small storage compartments for easy storage of small items. 🚗 DOUBLE ZIPPER DESIGN:We use two layers of internal and external zipper design, the outer zipper is 4inches below the inner zipper, the inner zipper is wrapped inside, completely prevent water infiltration into the rooftop cargo carrier dag, and prevent car roof cargo carrier bag in the process of use by the external force opened, more secure. 🚗 UPGRADE LARGE SPACE:The car roof cargo carrier bag is 15 cubic feet in size 44.1 "(L) x 33.8" (W)x 16.9"(H) and can accommodate four suitcases, four tents and six sleeping bags for your car trip storage needs. 🚗 FIT DESIGN: Equipped with 4 thickened adjustable shoulder straps, with double thickened material at the fixation, more durable and won't break. In addition, unlike other conventional roof cargo carrier , we have two longitudinal straps from top to bottom. This design allows the roof cargo bag to better fit the car and can effectively fix the bag body, prevent bumps and collisions to drop it. easy to install and use.