Designed for women with small or sensitive ear canals, Mack’s dream girl soft foam earplugs have a unique hollowed and flared design that maximizes comfort, especially during sleep. They are softer, smaller, silky smooth and contoured to provide unmatched comfort. With a noise reduction rating (NRR) of 30 decibels, Mack’s dream girl can be used in environments where noise is just a nuisance up to environments with hazardous noise levels. For sleeping, reading, loud events, music, travel, etc.