I'm disappointed with it. It seems well made and well designed but does not give good hits. After 3 sessions in a row I barely felt anything. The small vape that came with it works better. I've seen using THC for 25 years and I only use high end products and devices. I also went to school for electrical engineering. So I have knowledge and experience to support my opinion. My other devices with the same product give much better results. I believe that the cloudious9 does not get a good enough seal to the coil so air from elsewhere gets drawn in reducing the amount of the vapor you get.