When you're on the job, it's important to keep distractions at a minimum. Helps by reducing your exposure to hazardous noises and providing a comfortable fit with your hard hat and other safety gear. The tri flange design helps you achieve a secure fit, and the soft, flexible feel is comfortable for extended wear. Whether you're landscaping your home or building one, reach for the quick and comfortable hearing protection. 4 pair pack. Noise Reduction Rating (NRR) 32dB.