●100% WEATHERPROOF: To ensure complete protection against water, weve upgraded to a high-quality waterproof zipper and added a wide velcro flap to cover the zipper. ●RIP-RESISTANT: Built to last with heavy-duty 900D anti-abrasion PVC fabric that can withstand harsh weather conditions and rough handling. The triple-reinforced welded seams provide added strength to prevent tearing, making it ultra-durable and reliable. ●ANTI-SLIP & ANTI-THEFT: Equipped with an anti-slip mat, this bag remains secure while driving at high speeds and safeguards your car roof from scratches. It also includes a code lock to prevent theft. ●LARGE STORAGE SPACE: Offers a spacious 21 cubic feet of storage space (L52" x W39.5" x H17.5"), to easily store the luggage of a family of 5-6. It provides ample room for all your essentials. ●FIR FOR ALL CARS: With extra door hooks, this APTY roof bag is versatile and can be used with any sized car or SUV, regardless of whether or not it has a roof rack.