Earloop style Comfortable, cool, and breathable. ASTM F2100-11 - Level 1 Barrier. Fluance: ASTM F1862 at 80 mm Hg. BFE in excess of 98%. PFE in excess of 98%. Delta-P: Less than or equal to 2.6 Flammability: Class 1. Blue Single Use Not Made with Natural Rubber Latex. Packaged: 50 Per Box,
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