AirEssence diffuses through sola flowers - made one at a time - by skilled artisans using the dried peel of the sola plant that is sewn onto a cotton wick. In keeping with the Agraria definition of from the earth, sola flowers are a natural material and environmentally friendly. As the perfumed essential oils are absorbed through the cotton wick, the petals will change to the color of the oil and the bouquet will become fragrant. Gift boxed with crystal glass tray and 3 sola flowers. 7.4 oz/218 mL Approximate duration is 18 to 36 months depending on environment and usage.