A lot of it was based, the initial designs, was thinking about subway rides. We have a big subset of users who are pregnant women who ride the subway because they are sensitive to smell, and activated carbon is a good odor filter as well! So a lot of the initial design was thinking about commuters - subway commuters, bike riders, when you’re outside biking you’re exposed to a lot of exhaust. So biking, walking, riding the train with mostly other people, and outside the air around you. And that laddered up into airplane folks, people riding airplanes: the air is recycled and very dry, so we do 2 things, we create a micro-climate where it’s a little bit more humid and your mucus membranes work better, and then we’re filtering the air for you.