Breathable masks
I received two, tried them on, and bought two more.  Lifesavers if you have to wear a mask all day at work where the ac is just an illusion.  Not once in awhile on a cool plane or on a ten minute errand into the market.  For those kind of events, you can tolerate a regular mask.  If you need one you can really breathe in, these are the ones to buy.
Rating: 5 stars