A rain protector is an item used to protect against the elements, such as rain. The two most common items used for this purpose are a tarp and a MAC. A tarp is a large sheet of waterproof material that can be draped over an area to keep it dry. A MAC is a lightweight, waterproof coat that is designed to keep the wearer dry in wet weather. Both of these items are essential for anyone who needs to stay dry in the rain.