Size Women's MEDIUM (7.5") Diffuser Bracelet, handcrafted from faceted glass beads with 10mm Glass Cobalt Blue Flowered Accent Beads, on a semi-stretchy, heavy-duty cord. Hand-Made, imported from Bulgaria, Pottery Diffuser Beads. These beads hold the oils' scent and therapeutic aroma exceptionally well! All materials have been tested to withstand application of essential oils. Apply 1-2 drops of your favorite Essential Oil to the porous stone of the bracelet. The scent and aromatherapy benefits will last anywhere from 12-48 hours! Happy Diffusing!