No More Unwanted Noises For the times when you can't bear the intolerable sounds of loud concerts, motor or shooting sports or any other undesirable sounds, use Mack's SafeSound Ultra Foam Earplugs. High decibel noises and hazardous sounds can harm your hearing system, so these plugs can be a great noise blocker. The extraordinary features of these earplugs can give ultimate relief from noise commotion. Ultra noise reduction Easy to use Comfortable fit Mack's SafeSound Ultra Foam Earplugs are made from state-of-art low pressure foam that's skinned and tapered. It has pleasing colors too. Just For You: Adults A Closer Look: Mack's SafeSound Ultra Foam Earplugs are made with a high quality material and design that gives noise reduction rating (NRR) of 32 decibels. Warning: Keep away from infants and small children. These earplugs are nontoxic, but may interfere with breathing if caught in windpipe, which could lead to serious injury or death.