Hypo-allergenic surgical grade 316L stainless steel for long life and durability. You can now wear your essential oils anywhere. Every aromatherapy necklace INCLUDES 6 pcs washable and reusable highly absorbent synthetic felt pads in different colors. Strong magnetic closures and solid back insure you never have to worry about getting oil on your clothes. Note: The cotton pad has no flavor. You need to drip essential oil or perfume on the cotton pad. Or you can even put photo instead. SPEC: Pendant is 1.18\"/3cm in diameter with 24\"/60cm lobster claw stainless steel chain.