IFBLANK(Mack's SafeSound Slim Fit Earplugs are the same as the original Mack's SafeSound Earplugs, only smaller, providing comfort to those with smaller ear canals. These 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 Slim Fit can be used in environments where noise is just a nuisance up to environments with hazardous noise levels. For sleep, study, work, shooting sports, travel, power tools, loud events, etc. (10 pair), Mack's SafeSound Slim Fit Foam Earplugs 10 Pair)