Waterproof System - The RichYa roof bag body is made of 600D densely woven waterproof tarpaulin, while the coated zipper and zipper flap with velcro can also protect the dry luggage inside the bag in heavy windy and rainy days.

Comes with Anti-skid Pads - The anti-skid pads attached to the RichYa roof bag can increase the friction between the bottom of the roof bag and the roof, preventing the roof bag from sliding on the roof when the vehicle is too fast, causing damage to the roof.

10 Reinforced Straps + 6 Door Hooks - Whether your car roof has side rails or not, these accessories are great for securing the roof bag, giving the bag enough traction. NOTE: It can’t work on the rackless cars of which weather-strips are glued to the door frame or doors are sliding-doors.

15 Cubic Feet of Space - RichYa Roof Bag (44.8*34.4*17.2 inch) is an extra car space that can hold two 24 suitcases, two 20 suitcases and other items, giving you spacious and comfort travel experience.

Foldable and Easy to Carry - RichYa roof bag folded volume is 16*11*7.9 inch, will not encroach on your car space. And when you need to use it, just zip the storage bag open and unfold the roof pocket to gain an extra 15 cubic feet of car space.