Noisebuster Electronic Noise Canceling Safety Earmuffs - Standard - PA4000 Review

http://tinyurl.com/oyaqbdjNoisebuster Electronic Noise Canceling Safety Earmuffs - Standard - PA4000Product Review Click on the link for more reviewsElectronics cancel low frequency noiseComes with sturdy carry caseNRR 26dB -- PLUS 20dB electronic noise cancellationCan be used with portable audioOver-the-head and behind-the-head use