Do you ever get fed up with the gearbox after running off-road in a rally spec or buggy? This solves that problem! It drastically reduces the amount of gravel and sand that gets in! It has two zippers (or fasteners), making battery changes and maintenance easy. It's also breathable, so you don't have to worry (to some extent) about the heat generated by the motor and amplifier. ※ The chassis and body in the picture are for illustrative purposes only. They are not included.