Carry your favorite aroma everywhere with our essential oil diffuser keychain! Simply add a few drops of your favorite oils to diffuse on the go. Stay refreshed and uplifted throughout the day with this stylish and convenient accessory! More about the diffusers... - Available in keychain clip for easy detaching or traditional keychain ring - You can switch between oils once the bisque fired clay tile has released the aroma - Keychain Diffuser measures around 3.5 inches long x .75 inches wide - Packaged in clear bag to keep clean and contained Suggested Use... Start light! Aromas in a small, enclosed space like a car can get overwhelming quickly. Start with one drop of essential oil onto the white clay tile at the bottom of the diffuser. You can always add more if needed. By only adding oil to the clay tile and not to the felted balls, you can switch out oils once the clay as released the aroma.