Full face mask basic Plus is the economic version of the Comask 3s. Mask in very comfortable and high quality rubber. Anti-vapour visor in acetate with wide field of vision (80%). Voice transmission via exhalation valve located just above the filter socket. Headband is easily adjustable, no carrying strap to hang mask around the neck. Equipped with standard threaded connection and 148 for filters or air hoses with similar connection.