Our aromatherapy necklace includes six pieces of reusable highly absorbent synthetic felt pads. The Tree of Life locket is made from premium hypo-allergenic surgical grade 316L stainless steel for durability. Dab the felt in your favorite oil or cologne to enjoy the scent daily. It also comes with two green glow in the dark disc for something to light up the night. The necklace is 30mm round. The chain is 24".