MASK, N95 MED (20/BX) ASTM Level 3 Surgical Masks include 4 layers of construction which offer clinicians comfort, protection, and breathability that they seek a deep filter design provides cooler use durable mesh construction won’t collapse on your face Outer Dura-Mesh® shell – prevents hand or glove contact with filter media WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov