Unique overflow technology offering superior minimum breathing resistance Silicone valve unaffected by moisture Can be used in very low temperature conditions Horizontal foldable shape for better fitting and clear vision Hygienically individually packed Extremely low breathing resistance, CO², heat build up and extremely low moisture build up Foam area around the inside of the mask provides a perfect fit, maximum resitance, prevents misting Welded nose piece prevents irritation, misshaping and a tighter fit Adjustable strap fitting comfortably to all head sizes and shapes For low risk hazards where an assigned protection factor up to 4 is required