Full Face Mask C 701 (Class 3) redfaceblank and inner mask made of high quality hypoallergenic TPR excellent adaptability to different face shapes innovative new type of harness for more safety and more comfort mirror , distortion and scratch resistant PC lens extremely large ''all round'' field of view with intelligent ventilation system, without check valves, which minimizes breathing resistances and prevents the fogging of the visor efficiently with standard thread connection DIN