Hellberg Secure 2 Headband Ear Defender Protection level 2 for medium to high noise Best choice for high frequency noise Comfortable headband with soft padding The headband style hearing protectors offer great comfort and quality to all professional users. A light and durable headband construction with soft cushions and easy size adjustment provides a perfect fit for all head sizes. Protection level 2 is suitable for meduim to high noise levels, between 90-110 dB. It is the best choice for noise protection in environments such as building and construction, heavy industrial work and for long term noise exposures. Approval Info CSA Class: A Class: 5 ANSI approval: ANSI S-3.19-1974 CSA approval: CSA Z94.2-02 AU/NZS approval: AU/NZS 1270:2002 Environmental approvals: ROHS, REACH SNR: 30 NNR: 26 SLC80: 29 HML: 35-28-18 EN standards approval: EN352-1