Hearing aids that fit inside your ears are custom-made to fit you precisely. Invisible-in-Canal (IIC) are the smallest invisible hearing aids inside the ear. Because IIC hearing aids fit the furthest down in the ear canal, they are well hidden and almost undetectable by others. The deep fit also means they are less likely to pick up wind noise, and for many users, IIC invisible hearing aids provide a more natural sound quality. The small size of IIC hearing aids also means that the battery can be difficult to handle and needs to be changed more often than those in larger hearing aids. With options such as volume control and buttons that change environmental programs, the Completely-in-Canal (CIC) invisible hearing aids are popular for those who want a little more control over their hearing aids than what is available with IIC hearing aids.