Disposable polyurethane earplug, Uncorded, nrr 30</br>Individually packaged in polyethylene bags, 100 pair per box</br>All ear Plugs tested according to ANSI specifications S3.19-1974 by Michael & associates, Inc. NIST NV lap Code 100427-0</br>All HEAROS earplugs are made to the highest quality and comfort standards. Protect your ears from damage due to loud noises in any situation</br>Physicians recommend high quality ear Plugs like HEAROS for construction sites, factories or any situation where sharp noises can cause damage to unprotected ears</br></br>Product Description</br></br>The software nexgen, take a quantum leap forward in comfort, fit and protection versus traditional barrel shaped earplugs. Our silky smooth, NRR 30 polyurethane earplug is PVC free, rolls down Super tight, and its EZ grip design makes removal Super easy. Uncorded.</br><br/>http://www.amazon.com/gp/product/B01CCD6OBG