- Durable Waterproof Protection: Crafted from high-quality PVC fabric, our car topper luggage carrier is designed to withstand harsh weather and rough handling. The upgraded zipper features a flap with Velcro to secure it against wind and speed, ensuring your belongings stay dry. - Spacious 21 Cubic Feet Capacity: Measuring 51 x 40 x 17 inches, this roof bag provides ample storage for family trips, accommodating 4 suitcases, travel gear, 2 tents, and 4 sleeping bags. Say goodbye to cramped interiors and enjoy a more comfortable ride. - Enhanced Safety Features: Equipped with 6 reinforced adjustable straps and anti-slip pads, this travel bag protects your luggage from slipping while driving at high speeds. It also safeguards your car roof from scratches. Additionally, a code lock is included to deter theft. - Versatile and Easy to Use: Compatible with any car or SUV, our roof rack cargo carrier can be installed with or without roof racks. If your vehicle lacks roof rails, you can easily attach it using door hooks in just minutes. The included handheld storage bag makes it convenient to stow away when not in use. - Practical Use Scenarios: Perfect for family vacations, camping trips, or road journeys, this roof bag allows you to transport extra gear without sacrificing passenger comfort. Easily load up for a weekend getaway or a long road trip with friends, ensuring everything you need fits securely on your vehicle's roof.