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The Puffer Case is a device designed to help prevent the spread of COVID-19. It is a plastic container that fits over the mouthpiece of a vape pen. When you inhale, the air flows through the chamber and out the top opening. If you exhale, the air goes back into the chamber where it gets filtered again. The filter is made of activated carbon, which removes any virus particles from the air. The case comes in two sizes, small (for vapes) and large (for e-cigarettes).