The Zwislocki Ear Muffler (ZEM) from SensGard is a lightweight ear protector that provides a noise-reduction level of 26 decibels to protect against harsh and harmful sounds while allowing speech to be heard clearly. The earmuffs channel sound into small chambers located above the earpieces to deaden excessive noise. Weighing in at 1.7 ounces, the ZEM is 80- to 90-percent lighter than conventional ear protecting devices.