The Butterfly Clip diffuser is an affordable, easy way to diffuse your favorite oils in your vehicle. It clips easily to any air vent in your car. The Butterfly Clip Diffuser comes with 5 different colored felt pads. These felt pads are washable so you can change which oil you use as often as you would like. Now you can easily have your aromatherapy benefits where ever you go, and keep your vehicle smelling great!