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Three-layer Breathable 3D mask (Made in Taiwan)
** Bacterial Filtration Efficiency (BFE), measures the filtration efficiency of masks using live bacteria (viable particles) that vary in size from 1 to 5 microns. ... For example, a mask with a BFE rating of 99 percent at 3.0 microns provides less protection than a mask with a PFE of 98 percent at 1.0 micron.
-Retention period: 5 years
-This is a personal hygiene item and there is no return or exchange.
Easy-O-Fit Made in Taiwan Three-layer Breathable 3D mask