So Im probably not the first to think of it but as far as i know its a one of a kind. A pop or water bottle, regular god g cap, none of those three pulls and the cap melts type deals. And a three tennis ball tube, the rest is easy, mini travel G. And you dont even have to slide down with it, when the bottle bottom is near the top of the water level, just suck in and it bubbles like a bong. Also fits in your car cup holder.