100% PVC-free, available in three sizes to fit more workers and increase OSHA compliance, Dura-Mesh® shell resists collapsing in heat and humidity, molded nose bridge seals easily without a metal noseband, facepiece is naturally contoured without pressure points, straps are securely attached so they don't break at the seal, Softspun® lining for increased comfort and durability, soft foam nose cushion for added comfort, meets heat and flame resistance in accordance with ANSI/ISEA 110-2003 section 7.11.1. 20/bx. 12bx/cs.