Exposure to hazardous noise levels in the workplace is a common occurrence, especially in industrial environments when task and machinery often generate noise levels in excess of 85db. At that level the soundwaves can destroy or damage ear nerves and hair cells within the ears. the result can be permanent and irreversible hearing loss, which has a dramatic impact on quality of life. At Frontier, we have researched and developed a comprehensive range of hearing protection products that can reduce the risk of hearing loss. Our hearing protection products are designed to keep industrial noise below harmful levels. All Frontier hearing protection devices are classed according to the SLC80 ( Sound Level Conversion) rating system specified under Australian Standards AS/NZS 1270. This system was developed to ensure the most appropriate hearing protection device is selected to meet the particular environment. The SLC rating specified for each device represents the difference in the sound level between the sound at the source and the level reaching the ear, 80 percent of the time. SLC ratings are used to determine the class system for all hearing protection devices. The higher the class the higher the level of protection is achieved. Frontiers comprehensive range of hearing protection devices extends to Class 4 and Class 5 ear muffs, which are made from quality materials for comfort and reliability.