Extra large reed diffuser, holding 300ml. This diffuser will last you between 6-12+ months. Each large Reed diffuser comes with 8 long black fibre reeds. Flip your reeds 1-2 times a week, make sure you don’t not spill any of the liquid when doing so. Please refer to our product safety for the best advice on how to use your diffuser and get the most out of it. Terms and conditions can also be found.