At EAROS, we're on a mission to protect the world from hearing damage without ever sacrificing the listening experience. So we created EAROS ONE -- an acoustic filter designed with world class audiologists and engineers in MIT's Acoustics and Vibratory Lab, and manufactured in a top-notch medical-grade facility right here in the USA. EAROS ONE is far more than an earplug. It's the ultimate listening device -- preserving sound fidelity while simultaneously protecting from hearing damage. The slim profile, ergonomic design, and expertly engineered acoustics make EAROS ONE a superior solution for high decibel situations. A successful acoustic environment is not an accident. Over two years, we worked to fine tune every aspect of EAROS ONE. We developed patent-pending soundbore technology that allows users to remain immersed in the full spectrum of frequency. We settled on a streamlined shape that perfectly contours to your ear. We selected durable, reusable materials to avoid waste and promote sustainability.