Description Low-frequency noise; the best choice when nothing else will do. 140-150 dB levels. ,Using passive noise-blocking muffs attenuate based on the highest quality of insulating and dampening materials.,Light, durable construction with easy size adjustment provides the perfect fit for all head sizes.,Are dielectric, non-conductive.,Wide and soft ear cushions with snap-in system for quick, easy replacement.,Smooth telescopic single point adjustment increases comfort, stability and wear time.