The GreenSmoke cartridges are the part of your electric cigarette that looks like the filter. They include the solution of nicotine, water, and flavor, and the atomizer (heating element) that turns the solution into the steam (the "greensmoke") that you breathe in.

Each cartridge is comparable to a 1-2 packs of tobacco cigarettes. The cost of cartridges is where your really save money. Could you ever imagine you could pay under $2 for a pack of cigarettes?! Now smoking will cost even less! GreenSmoke saves you "green"!