I was watching the Jai Haze channel one day and he did a review on this quite unique pod system. Now that I'm interested I can't find the review. It a pod based system (obviously) the the top cap, or pod, can be flipped to create a different type of draw. One was a MTL/restricted lung and the other was a less restrictive, but still restrictive open lung. Anybody have any idea what I'm talking about?