• 100% latex-free with CoolSilk® lint-free and dye-free inner layer • Quad-Fold® design offers 15% more breathing volume • Proprietary RoundEdge® corners & cushioned earloops for added comfort • Front-facing BeeSure indicators ensure correct donning and delivers maximum performance • ASTM level 3 protection Protection Rating: ASTM Level 3. BFE > 99% / PFE > 98% @ 0.1 Micron.