Details DOSH SIRIM Approved Reduces noise levels up to 33 dB (SNR) Low-profile cup design for improved compatibility with other personal protection equipment (PPE) Wide flat headband is electrically insulted making the earmuffs electrically resistant or 'dielectric' 3M™ E-A-Rfit™ Dual-Ear Validation System testable Slow-recovery, high-density foam 3M™ PELTOR™ X4 Earmuffs offer a slim lightweight option with a Single Noise Rating (SNR) of 33 dB, depending on attachment type. This low-profile earmuff is ideal for protection against mid- to high-level industrial noise and other loud sounds. 3M™ PELTOR™ X-Series Earmuffs deliver comfort, design, and protection in one groundbreaking earmuff line. Additionally, these earmuffs have earcup pivot points that tilt for optimum comfort and efficiency, as well as replaceable ear cushions and foam liners to help ensure acceptable noise reduction, hygiene, and comfort.