Mack's Ultra Soft Foam Earplugs - 20 Pair Bonus Pack, High Noise Reduction

Soft, High Performance Hearing Protection, High NRR for Ultra Protection. Noise Reduction Rating 32 Decibels When used as Directed. The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 - a high number denotes greater effectiveness. Extreme Noise Blocker. Loud concerts, motor sports, sleep, shooting sports, power tools, etc.