Eargo is a virtually invisible, rechargeable in-ear hearing aid that is inspired and modeled after the shape of a fishing fly. Made from medical-grade silicone, the patented Flexi Fibers allow air to flow naturally through the ear canal, while being strong enough to hold the device firmly in place. Furthermore, the design ensures for natural bass sounds to pass through into the ear canal, resulting in improved sound quality. When fully charged, the batteries last an entire day, eliminating the need for replacement batteries.