Protective Respirator Mask | FULLElastomeric 5400 Series full facepiece is economical and provides protection with comfort. It offers flexibility for multiple work environments. The hard coated polycarbonate lens offers a wide 200 degree field of vision, provides excellent optics, is scratch resistant and meets ANSI standards for impact and penetration resistance. The facepiece seal assures excellent comfort, fit and performance as it is made from a soft, pliable elastomer material