Mine's a 3m 7800 chemwar mask with a bike sprocket on the front grill and dual intakes routed around the back of the mask. I broke down a megaphone and r4an the mic inside so when I press the button I sound like darth vader. I was pretty stoked to finally use it, and now with glee I wear it when they ask for a mask, I come back in from the truck as mad max. It's logical because they can't deny that my mask works and their doesn't. "Covids climbing all over your eyeballs right no.!" I say in my amplified vader voice. Embrace the odd, preppers won, let's party.