I bought these in the hope that they would help my hyperacusis. A rare condition where loud sounds produce pain in my ears. Unfortunately, they did not help me in every day life. They do work very well reducing the impact of gun shots though. Please check out my other antique & vintage items for sale. If not, please contact me for resolution. “Fine Print” All sales are final. Nonpayers WILL be reported as deadbeats! No warranties expressed or implied. Items are offered AS IS and it is your responsibility to view photos and ask questions. We do a thorough job at checking items for defect and listing major defects accordingly. In case we may miss something, high quality, hi-res photos are posted for your convenience. Please see photos, zoom in, and please, ask questions. We answer all questions within 24 hours if not sooner.