Key Features NIOSH Approved N95 rating Adjustable Nose clip. Quick and easy to wear. Individually packaged prevents contamination. Vertical flat fold for easy storage. Ultrasonically welded headbands. Soft inner lining. No need to pre-stretch straps. Material Composition Nose clip- aluminum. Straps - Thermoplastic Elastomer. Shell- Non woven SS 50G/M2. Bacterial filter efficiency >99.9%. Hot air cotton PP 50G M2. Country of Origin Made in the USA with globally sourced materials. Approvals and standards NIOSH approved N95 particulate respirator. NIOSH Approval Number TC-84A-PH16 Time Use Limitation Replace the respirator when it becomes dirty, damaged, or difficult to breathe through. Shelf Life and Storage 5 years from the date of manufacture Store in temperatures between -4AdegF, (-20AdegC) and +86AdegF (+30AdegC)