Panorama Series masks feature triple-sealed edge for comfortable fit on any size face. Offer wide field of vision and easy communication. Centrally located cartridge connection allows user to move freely and bring needed equipment close to the face. Installed aircup allows air flow control and keeps lens from fogging. A 5-point head harness strap is infinitely adjustable. Mask accepts a range of filters and cartridges or canisters. Ideal for nuclear, biological, or chemical situations.