The TCI IMPULSE-HP-1.0 is a first-rate product that boasts exceptional noise-blocking capabilities, offering an impressive Noise Reduction Rating (NRR) of 33dB. These reusable, high-end earplugs stand out due to their enhanced contoured shape that ensures easy insertion.The earplugs have been crafted from a proprietary material that promises ultimate comfort, even when worn for extended periods. They consistently deliver robust performance that you can rely on. What truly sets these earplugs apart is the patented Impulse Filter Technology. This innovative feature automatically engages to protect your hearing, whilst continuing to let normal ambient audio pass through, making it a perfect solution for protection against single shot and explosions, as well as automatic rifle fire, artillery, impulse, and impact noise.