Our macrame essential oil diffusers are the perfect accessory to hang in your car’s rearview mirror or as decor in your home, office space, etc,! Add a few drops of your favorite essential oil to the wooden ring and enjoy the scent! Each car charm measures approximately 4 inches tall and 3.5-4 inches wide (at it's largest point). The ends of the cord are left untied to be able to adjust to your desired length. Due to the handmade nature of each car charm, there may be slight variations in size and appearance. Each piece is uniquely made for you!