At House of Mojo Australia our diffuser reeds are all natural, not synthetic. Colour - Black Made from the Rattan plant, they absorb and diffuse fragrance more effectively than synthetic reeds. Rattan is a renewable source making these reeds environmentally sustainable, unlike synthetic reeds which can be less biodegradable. each reed is approximately 5mm thick 10 reeds to a bundle. NOTE: Diffuser is not included. The price is for a bundle of 10 reeds only! Product Care Rotate reeds once every few days or until they are saturated. To refresh and intensify the fragrance, rotate the reeds. To reduce the strength of fragrance try removing a reed. To increase the strength of fragrance throw, add reeds! Caution: Avoid contact of the oily reeds with the skin, eyes and porous surfaces and all fabrics. Oil may cause staining. Keep out of reach of children, do not ingest, avoid flames and do not light the reeds!