This 11.5 cubic foot roof cargo box provides secure, weather-resistant storage for road trips, camping, and family vacations . Crafted from high-quality ABS material with a hard shell design, this rooftop cargo box is waterproof, UV-resistant, and built    for durability . The aerodynamic shape minimizes wind resistance, reducing fuel consumption and noise for a smoother driving experience . Measuring 54.3 inches long, 31.5 inches wide, and 11.4 inches high, it adds 326 liters of storage space with    a maximum 135-pound load capacity . The universal fit design is compatible with most vehicles equipped with roof racks, including cars, vans, and SUVs . The convenient dual-sided opening system allows easy access from both sides, while the included    2 keys and 2 secure straps provide peace of mind during travel—simply ensure one side is locked when opening the other . This roof mount cargo carrier is the ideal solution for transporting luggage, camping gear, sports equipment, and bulky items    that don't fit in your vehicle.Product Parameters:        Product Type: Roof cargo box / rooftop cargo carrier / car roof storage box        Capacity: 11.5 cubic feet (approximately 326 liters)        Dimensions: 54.3 inches (L) × 31.5 inches (W) × 11.4 inches (H)        Weight Capacity: Maximum 135 lbs        Material: High-quality ABS hard shell (waterproof, UV-resistant)        Design: Aerodynamic shape (reduces fuel consumption and noise)        Opening: Dual-side opening with locking system        Included Hardware: 2 keys, 2 secure straps        Compatibility: Universal fit for cars, vans, SUVs with roof rack        Installation: Requires compatible roof rack (check fitment guidelines)        Warranty: 1-year product warranty