RZ Mask discount, by name dropping April Wilkerson (one of the YouTube channels I subscribe to). I think the idea of a mask is great, and these don't look nearly as terrible as the paper dust masks actually are so I'm in for an "M2" (I like the idea of mesh way more than neoprene, I sweat too much as it is...) They say with the discount code you get a free pack of filter refills (and free shipping), but I couldn't add them to my cart since they show as sold out, I guess I'll have to find out if they will toss them in the box or not...