The Howard Leight Quiet QD30 Corded Earplugs feature a bell shape that perfectly matches the contours of your ear canal. And while it's hard to even notice that you're wearing them, they provide a Noise Reduction Rating (NRR) of 26, making them perfectly suitable for a number of noisy job applications. Having a corded earplug greatly reduces the risk of losing one. Combined with the fact that it's designed for multiple uses means you're getting a great value overall. After usage, it's recommended that you wash them. Long lasting, affordable, comfortable, and incredibly easy to insert, the Howard Leight Quiet is a very popular choice for hearing protection. 100 per box.