- Effective Noise Blocking : The unique grip rings create a secure, soft seal within the ear canal, ensuring top-notch hearing protection while you work. - Superior Noise Reduction : With a Noise Reduction Rating (NRR) of 31 dB, these earplugs meet CSA Class AL standards, making them a reliable choice for high-noise environments. - Designed for Comfort : Specifically designed for individuals with larger ear canals, these earplugs provide a comfortable fit without compromising on safety or effectiveness. - Versatile Applications : Perfect for a wide range of activities, including chipping, chiseling, drilling, furnace operations, grinding, heavy equipment operations, machining, pouring, casting, power fastening, riveting, sanding, sawing, and welding. - Convenient Storage Solution : Each pair comes in a poly bag to keep earplugs clean before use. The included cord allows for easy storage around the neck when not in use, ensuring they are readily accessible. These earplugs are engineered to address the demands of noisy work environments, offering both comfort and reliability.