🚙【MILITARY QUALITY FABRIC REACH TO 100% WATERPROOF】Different from most car roof oxford bags in market who claim to be 100% waterproof but aren't, our soft roof top carrier waterproof bag is made of heavy duty PVC tarpauline fabric, adopts a genuine waterproof coated zipper and a double flap, all seams are heat welded and stitched to ensure they are watertight, which can withstand extreme weather like rainy, snowy, windy and sunny. 🚙【PREMIUM ANTI-FALL APART Straps & ANTI-SLIP PROTECTIVE MAT】Equipped 8 heavy duty adjustable straps and stong clip to keep the cargo carrier in place. In addition, we adopt imported superior quality anti-slip mat to fix the cargo bag to stay in place even in high speed road or bump road, also, it can protect your car roof from damage. 🚙【UNIVERSAL DESIGN, COMPATIBLE FOR CAR WITH / WITHOUT RACK】 Perfect car top carriers is suitable for VEHICLES WITH or WITHOUT RACKS, equipped extra door hook to install car roof bag for car without rack. 🚙【X LARGE STORAGE SPACE】Instantly create 16-cubic feet cargo storage space in total 425 liter capacity, free up inside vehicle space for more comfortable on the way. Folds compact for easy storage. 🚙【LASTING TRIP AFTER TRIP & 100% LIFETIME WARRANTY】Don't worry about our quality! We offer 100% full refund and lifetime warranty, what we need is happy customer. If you unfortunately get one that doesn't work, please contact us.