Materials: 10mm Lava, Lapis Lazuli, Jasper, Sodalite and strong stretch cord. Lava stones are porous so they will soak up your oil(s) without having to worry about any leaks. The scent will diffuse for 2-3 days depending on your oils. Some oils are stronger than others and can last longer. Bracelet will come tied to an instructional card and packed in a hand stamped muslin drawstring bag.