The First Real Performance Breakthrough in a Simple, Mechanical Plug. Hear Normal Sounds & Protect Your Ears With Our Proprietary Sound Value. Best Hearing Protection Logic might dictate that the Sound Valve running through the core of Plugz Pro would limit sound protection. But that simply isn't so. This unique technology provides you with 12 dB Noise Reduction Rating (NRR). Unsurpassed by any other kind of plug and many electronic hearing protection devices. Washable & Reusable Earplugs - The SportEAR Comfort-Fit Silicone solution is designed for easy maintenance and a lifetime of use. This non-allergenic material is durable and easily washable, including the Sound Value, to reuse as many times as you like. Simply wash and place back in its container until your next use. And with the attached, loss-preventing lanyard, you'll be able to reuse your Plugz Pros for as long as you like.