Our 3-ply face masks are Best for all: It has three layers or 3-ply which work as follows: The outer layer repels water, and other body fluids. The middle layer filters certain pathogens. The inner layer absorbs moisture and sweat from exhaled air. Comfortable In Fit: Made of non-woven fabric for breathability and the elastic ear loops with adjustable nose piece mean that it fits most people. Fit In Size: One Common adult size ( 17.5 9.5cm ) Filtration Efficiency: BFE%>98%
