These bracelets are made of lava rock stone with 8 mm (0.31 inch) lava bead, durable enough for long-time use. Made with strong elastic rope, both adults and kids can wear these lava bracelets.
Essential oil absorbing:
The lava bracelets can well absorb the essential oil. Just drop your favorite essential oil on the lava beads and wait a few minutes for the oil being absorbed thoroughly into the bead, and then the scent will slowly spread and keep a day.