The purpose of a motorhome bra, also known as an RV mask, is to protect the vehicle from road-related damage. Motorhome bras are made from heavy vinyl to shield the front end from rock chips, flying bugs, road debris and other similar items that could cause damage.
Using a motorhome bra can extend the life of the front of an RV by preventing paint chips and bent grill bars. Many companies offer motorhome bras that are custom-fitted to a particular vehicle model, creating a tight fit and preventing flapping sounds and paint scratches. Similar bras are also made for cars and trucks.