These wholesale aromatherapy diffuser necklaces will allow your customers to use their favorite essential oil or one of our special blends wherever they go. Each medallion contains a small piece of pad containing a few drops of oil that slowly diffuses through the ventilation holes in the front. The smell of your oil may last for several days, but you can always add more oil to the pad after the oil has fully diffused. The medallions are available in two sizes of 25 mm and 30 mm in diameter and 5 mm in thickness and are made of stainless steel to ensure that the oils do not lose their shine or break the metal over time. Each necklace comes with 10 assorted color pads.