Modern, attractive low-profile design that is lightweight. The twin headband design offers outstanding balance and comfort and new ear cushion foam technology offers an effective acoustic seal and reliable protection. Electrically-insulated wire headband. Soft wide cushions help maintain a comfortable pressure around the ears. Noise Reduction Rating (NRR) of 21 dB for low to moderate noise exposures. Fits a wide range of industrial safety helmets without any adapters.