Razer sold the $100 Zephyr mask for only a few months ending in ... to perform to the N95 standard of 95 percent or greater PFE [Particulate Filtration Efficiency]," the lawsuit said.

This particulate matter can range from clearly ... that ends with a 99 would be 99 percent efficient. A P100 respirator is not 100 efficient because nothing is 100 percent in life.

or fine particulate matter, which is especially dangerous when inhaled, and AQMD officials advise that if residents must absolutely be outside they should consider a P100 respirator or properly ...

However, unbeknownst to those who bought the $100 mask, Razer's claims were not substantiated ... only achieve a maximum of 86.3 percent PFE (Particulate Filtration Efficiency).