Lefeng Aromatherapy Essential oil Diffuser Necklace locket Pendant with 24" Chain + 8 Washable Pads Pads High technology: Environmental protection plating, Tasteless, protect you from allergy. Enjoy essential oils and the aromatherapy by wearing your aromatherapy diffuser wherever you are. This diffuser necklaces' design is practical for men and women. You never need to worry about getting oil on your clothes since we have strong magnetic closure and solid back. Perfect gift for friend and relatives.