Ideal for those tasks involving vibrations at frequency levels greater than 300 Hz. Engineered to reduce the vibration absorbed by workers' palm and fingers. ActivArmr gloves help protecting from Hand-Arm Vibration Syndrome (HAVS). Vibration attenuation EN10819 TRM (Transmission Ratio Medium frequency range) = 0.90 TRH (Transmission Ratio High frequency range) = 0.52