Honeywell 7600 Opti-Fit Respirator provides a high level of performance. Lightweight construction minimizes stress on the head and neck for comfortable extended wear. The replaceable facepiece lens is virtually distortion-free, providing an exceptional view of the surrounding workplace. Honeywell 7600 lens is treated with an anti scratch coating for enhanced durability. Soft but durable silicone skirt forms a comfortable, effective seal against the face, and the nosecup helps prevent fogging. NIOSH approved.