Reusable Corded earplugs. The TPR (thermoplastic rubber) material molds to the ear canal after a few minutes by reacting to the warmth meaning the product fits almost every wearer. Featuring an improved shape for increased comfort and better attenuation performances. Paddle-style grips provide quick, clean, and consistent placement of earplugs. No-roll design keeps earplugs, and ears clean, even when fingers or gloves are dirty. Earplug design keeps tips clean even if hands are dirty. Slow recovery foam easily goes into the ear canal and then seats and stays in place. Noise reduction rating (NRR) 25 dB.