With the new Jackson Safety H30 multiple-use comfortflex earplugs, it’s what’s inside that matters most. A specially designed inner stem helps to fit and “flex” the earplug to conform to the natural curves and shape of the ear canal. The ultra-soft exterior foam works together with the inner stem to provide superior comfort – all shift long. Plus, an ergonomic handle makes insertion and removal easier and more hygienic. Features: NRR 25; Class A(L). Comfort of foam plus easy to use. Flexible stem for custom fit Patent-pending tapered design. Conforms to ear canal. Stays in place. No roll-down required. Reusable. Compliant to ANSI S3.19-1974.