6 Layer Go Green Dr. Choice Premium 6 Layer N95 Mask(Adjustable Head Loop). 1st Layer Spun Bond 60 GSM,  2nd Layer Pure Melt blown 25 GSM, 3rd Layer HEPA Hot Air Cotton Filter Fabric 60 GSM, 4th Layer Spun Bond 25 GSM,  5th Layer Pure Melt blown 25 GSM, 6th Layer Soft Non-Wmore...