Math Car Air Freshener Great novelty car air freshener from AAF. State the fragrance required in FREE gift message box when proceeding through checkout. Choose from over 15 different fragrances. See "Product Description" below for available fragrances. Ideal as a gift and great for hanging in your car, home or office. Packaged in a polypropylene bag. Actual air freshener size is approximately 94 mm x 62 mm.