This bracelet features black lava beads to add any desired essential oil to..it will last 2-3 days. Some oils last longer... once it wears off then you can add other oils or the same oils whatever you want. It’s a nice alternative to chemical perfumes. They also are great for repelling insects in the summer with certain oils. The teal and black looks very nice with the Silver S shaped swirl links. Teal beads are Czech glass fire polished round snake beads -6mm. Lava beads -6mm. Length is 8” the S link on end is a hook clasp with the large ring. Specify your custom length needed.