SPECIFICATIONS: FOR NOISE LEVELS UP TO 95 DBA. STAINLESS STEEL CONSTRUCTION RESISTS BENDING AND WARPING. EARCUP PIVOT POINTS TILT FOR OPTIMUM COMFORT AND EFFICIENCY. NOISE REDUCTION RATING (NRR): 21DB. CSA CLASS B. 3M PELTOR OPTIME 95 BEHIND-THE-HEAD EARMUFFS FEATURE LOW-PROFILE EARCUPS THAT FIT WELL WITH MOST HELMETS, EYEWEAR AND OTHER SAFETY EQUIPMENT. PROVIDES EFFECTIVE HEARING PROTECTION AGAINST HIGH-FREQUENCY NOISE.