Simply put the aroma oil in the vase and insert the bouquet, and the fragrance will rise as a diffuser! The reed sticks are built into the artificial flower bouquet. The aroma oil is blended mainly with citrus aromas (grapefruit, osmanthus, bergamot, etc.): Contents: Approximately 90ml This product is delivered as a set of 3 items: an artificial flower bouquet, a vase, and aroma oil. The condition of the product is as shown in the photos. The last photo is an example of use with a different color. (The bouquet delivered will be the pink & purple color.) Shipping is included and will be sent via Eco-Mercari.