... Anti-fog vision; Carbon cylinder; Snug&adjustable tapes; CE&EN137 scba with military silicone face mask : Specification: Item name:breathing apparatus ... ,fire fighting scba;3000bar with EN136,EN137;CE,CCS,UL approval.Working environment ... strap and belt ,can fix the height of the SCBA;3.Adjusting the belt can distributed pressure on the shoulder ...