Home / Hearing aids / Invisible hearing aids Invisible hearing aids Completely in the canal (CIC) and invisible in the canal (IIC) hearing aids are the smallest types available. They fit further into the opening of your ear than ITC hearing aids and are barely visible. But these hearing aids aren’t usually powerful enough for people with severe hearing loss. They’re also quite fiddly and some can only be put in and taken out by a hearing aid specialist. No products were found matching your selection.