Mud Flap is a kind of guard shield which is used together with fender to help protect the vehicle, passengers, and pedestrians from splashing mud and debris coming into the car by the constant movement of tires. It is made of materials like rubber, high quality plastic, and metal which are not get spoiled from debris or road contact surface. It is basically a rectangular sheet attached back with tires or molded into the rear side of a vehicle. It core purpose is to improve airflow and reduces the chances of aerodynamic drag contact with road surface. It also provide heat venting capacity to enhance airflow and promote quick release of re-circulated water and air from the fender well to help improve performance by cooling tires and brakes.
It prevents a car from mud, snow, dirt, debris, rain water, and all kinds of stone particles thrown into a car which causes scratches to damage a vehicle.