Designed to fit all car rooftops, it can increase your vehicle's cargo space without impeding passenger comfort. Using a Protective anti-slip Mat helps cushion and quiet the contact between the car top carrier and the roof, prevents luggage from sliding, and protects your car roof paint. Large capacity - 15 cubic feet; Tearproof and waterproof design, no water come inside, keep cargo dry and clean; Fits all cars with or without rack; With protective mat to protect vehicles roof finish from scratching.