America"s #1 selling molded foam earplugs. Mack"s® SafeSound® Earplugs are molded with state-of-the-art super low-pressure, skinned and tapered foam. These special features provide unmatched comfort and improved hygiene. With a noise reduction rating (NRR) of 29 decibels, Mack"s® SafeSound® can be used in environments where noise is just a nuisance up to environments with hazardous noise levels. For sleep, study, work, shooting, travel, power tools, loud events, etc. (3 pair)