Simple type of hearing protection. The effects of working with loud power tools without hearing protection are well known: tinnitus, pain, and over time, hearing loss. However, this can be easily avoided. 3M E-A-R Classic foam earplugs protect your hearing and reduce all noise. The polymer foam is truly effective. It absorbs even the loudest sounds and hard impacts. The noise reduction level is 28 dB, which is slightly below that of full-sized ear protectors. But a pair of earplugs costs much less, weighs almost nothing, and requires no cleaning or maintenance. Just insert a pair of earplugs into your ears, work all day, and dispose of them afterward. Additionally, these small earplugs allow for the wearing of all types of protection such as glasses, helmets, coveralls, and respirators. The material of the earplugs is a nice combination of softness, firmness, and slow recovery.