Isofluid Plus Earloop Mask - Kaleidoscope, BFE > 99.8% / PFE = 99.5% at 0.1 micron, Fluid Resistant Spunbond Outer Layer and White Extra Soft Hypoallergenic Cellulose Inner Layer for Sensitive Skin. Secure Loop Ear Loops, Full-Length Aluminium Nosepiece, Latex-Free, Box of 50 masks. ASTM Level 1. Box of 50 masks