Our Certified Authentic Blue Bear Face Masks are made to the highest non-medical standards, and filter out 99.56% of particulate matter according to independent lab tests. This lightweight, triple-layer mask is comprised of a fluid-resistant outer layer, an ultra-filtering fabric mid-layer, and a soft and sterile inner layer. These single- use masks feature an adjustable metal nose-bridge for a flexible fit and maximum protection. Features - Made to the highest non-medical standards - Filters out 99.56% of particulate matter, according to independent lab tests - Triple-layer (fluid-resistant Moisture Shield, Melt-blown mid-layer fabric to filter particles, soft and sterile inner layer for your skin). Specifications - High-stretch ear loops - Metal Nose Bridge - Measurements: 6.9" x 3.75"