50/150/250 Pcs Disposable Face Mask 4-Ply ASTM Level 3 Earloop 99% BFE PFE Quad
>99% BFE and PFE filtration efficiency. 50 / 150 / 250 Pcs Disposable Face Mask, 4-Ply, ASTM Level 3, Earloop, Quad-Fold, >99% BFE/PFE. ASTM Level 3 protection. 4-ply disposable face masks. Disposable, single-use masks.