This lightweight earmuff is designed for protection against high-level industrial noise and other loud sounds. X3A over-the-head earmuffs feature a newly designed spacer to help improve attenuation without the need for a much larger cup or double cup design. Features an electrically insulated (dielectric) wire headband to help reduce exposure to electrical hazards. Twin headband design helps reduce heat buildup with good fit and balance. Wire headband offers comfortable pressure during prolonged usage. Earcups tilt to ensure a customized fit and comfort for individual users. Material(s): Metal; Plastic; Ear Cushion Material: Vinyl Covered Foam; Noise Reduction Rate (NRR): 28 dB; Ear Muff Style: Over-The-Head.