-The Oil Collection diffuser necklaces are specially designed for beauty and durability. -Each pendant is attached with our special double ring and is shipped in The Oil Collection signature bag. -Only necklaces purchased from The Oil Collection are backed by our no questions asked warranty and include additional felt pads so you can use multiple oils and oil blends. -Put a few drops of your favorite essential oil on one of the felt pads included with your purchase. Open the locket and place the felt pad inside the locket. The filigree pendant will allow the aroma of the oils to surround you while you are wearing the necklace. -Aromatherapy necklaces are wonderful gifts or keep it for yourself and smell your favorite essential oils throughout the day. -Essential oils - NOT included.