| Etymotic Research ER20HD Safety Earplugs (Noise Reduction for Construction DIY Warehouse Concerts Musicians Race Track and Sporting Events) - Standard Clear Stem w/ Frost Tip - Polybag ETY-Plugs HD are the world’s first high-definition ready-fit earplugs They reduce noise levels while preserving the clarity of speech and environmental sounds ETY-Plugs HD are configured to replicate the natural response of the ear so sound quality... more | | $32.73 FREE shipping go to store |