3-Ply, latex free,Malleable PVC coated aluminum nose clip prevents air leakage,Latex-free round-Lycra elastic ear loops,10 mm PP side banding provides strong elastic attachment,High bacteria-filtration (No Less Than�95%),Low breathing-resistance (No More Than�49 0 Pascal/cm2),Effective protection against airborne particles and provides the comfort of a soft and breathable fabric,Disposable,Manufactured in an FDA Registered�Factory,Sold in poly-bagged packs of 50 masks.� Available for purchase in quantities of 50, 250, and 5,000