Mouth to lung vaping is the motion very similar to smoking cigarettes. It's the motion of bum puffing into the mouth then inhaling into the lungs.
With Vaping becoming more popular a lot of people are getting into 'Cloud Chasing' and trying to build the biggest Mods to create the biggest clouds.
But for the people who are using vaping to hold of buying over priced death sticks still hold on-to their mouth to lung technique.
Below is a few of my top recommended mouth to lung tanks that while adapt to almost any mod.
For more info and products: