Product Features: Durable material, constructed with three layers protects against sun, rain, wind, and grit. Provides Large Capacity for storage on the way. 15 Cubic Feet, which is the equivalent of 5 medium-sized suitcases, even more! Straightforward, easy and quick installation method. Tighten and fix with 8 reinforced straps by attaching to racks. Soft sides flex to fit odd-shaped loads. Folds compact available for minimal storage. Capacity: 15 Cubic Feet Dimension: 44”x 34”x 17” (112 x 86 x 43 cm) Package includes: 1 X Instruction book 1 X Cargo Bag How to Install? 1. Clean your car rooftop; 2. Place the cargo bag on your car top; NOTE: Always face the side with no zipper towards the FRONT of the vehicle 3. Unzip the bag and load cargo in. Place heavy, large objects first and then lighter items on the top, creating compact load; 4. Close the zipper and fold the flap to cover the entire zipper; 5. Two Installation Ways: For cars with roof racks , please attach the bag to the roof rack by feeding the loose ends of the straps under the side rails and locking into buckle. Repeat the same procedures until all the straps are well fastened; For cars with no racks , please use our 4 door hooks as the roof rack to secure your bag. First pull down the car door rubber seal which is usually used to prevent water from entering the car. You will then see the car door metal frame. Please attach the hook to the metal frame and push back the rubber seal to create a loop outside the door. Finally, install the rooftop cargo bag on your car, and strap it to the 4 loops to secure your cargo bag. 6. Tighten both ends of each strap until the cargo bag is secured. Tie off excess straps to prevent from flapping while driving.