Each set includes four unscented felt balls with a branded charm and elastic string, making them easy to hang in your car and a 5mL bottle of our fragrance oil. 4 Unscented ethically sourced wool felt balls Metal charm and elastic string Eco Kraft Paper PLA degradable packaging 5mL Glass Fragrance vial Fragrance Oil: All premium fragrances are 100% concentrated, made with the finest perfumery ingredients. All fragrances have been specially formulated to the highest standards using The International Fragrance Association (IFRA) code of practice. All fragrances are free from LEAD, DBP & DEHP PHTHALATES, FORMALDEHYDE, ACETONE, BENZENE, CARBON, PETROLEUM, PARAFFIN WAX, PALM OIL.