100% WATERPROOF - Made of military-grade superior heavy-duty PVC, 5 times durable than nylon oxford, and works much better to be waterproof, UV proof. #1 MOST SAFE & SECURE - Exclusively equipped with 10 reinforced adjustable straps instead of 6 to firmly keep bag mounted on all roof racks. Unlike the dangerous and illegal way to tie down luggage by involving straps going through the car, you can fasten the cargo bag through car door with hooks, make it to be the safest and most secure cargo carrier! EXTRA PROTECTIONS - Oversized zipper closure with strong seam, protecting your luggage against rain, grit, snow, wind, and sun, keep cargo dry and clean. And the anti-slip mat keeps the bag stay in place, with no slip, no scratch, no residue. ROOMY CAPACITY - Instantly create 15-cubic feet cargo storage space in total 425 liters capacity, free up inside vehicle space for more comfortable on the way. It Folds compact for easy storage. The overall size is 44”x 34”x17”. EXTENDED WARRANTY- Backed by THREE-years limited warranty + 7/24H customer support.