<p>AXIL XP Defender Ear Plugs feature a valve you can leave open to hear natural sound clearly. With the Dynamic Mesh Filtering System™, these plugs screen loud sounds offering 10 DB SNR protection for your ears. Simply close the valve and you'll have hearing protection rated at 18 DB SNR. A toggle switch allows you to go from open and closed with ease. The protective tips are made with medical, non-allergenic, ultra soft EVA material. The filter casing is made from ABS, medical-grade non-allergenic material. The AXIL XP Defenders are washable and reusable.<br></p> <ul> <li>18 DB SNR in closed position</li> <li>10 DB SNR in open position</li> <li>Toggle switch</li> </ul>