Product Details: Size 3.74" x 6.89". EN 149:2001+A1:2009R. ≥95% Bacterial & Particulate Filtration Efficiency (BFE/PFE). Fluid resistant and disposable. 100% Latex Free. Ultrasonic bonding for enhanced durability. Malleable nosepiece for adjustment and comfort. Elastic earloops for easy donning and a secure fit. 50 masks per box. Non-returnable.