Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Does Not Eliminate Low Frequency Sound
Review: Purchased for purpose of ELIMINATING low frequency sound pressure/vibration from apartment neighbors, i.e. as in improving reading/relaxing environment. Hoped that product would create vacuum seal about the ears. Sound is reduced, but disappointed that I can still hear low freq vibration/sounds; in fact while wearing the product, low-freq sound vibrations seem to be clarified/intensified. Don't doubt product claims to protect ears from LOUD volume sounds, but that was not my main goal. The product presses on nerves of face, and around ear, so wearing time is limited, as soreness results after about 45 minutes.
