They're not bad and have a lot of benefits. They're little vaporizers with flavor cartridges that you attach, so when you inhale you get a vaporized flavor with or without nicotine. The upside of it all is that you get the look and feel (though not exactly flavor) of a cigarette, with full nicotine delivery, but with a lot less risk than actually filling your lungs with most of the crap that comes out of regular cigs. I kinda liked it when I tried my friend's set out.