Open Fit Digital:
The newest in hearing aid design occlusion free hearing. 

CIC Completely-in-the-Canal (CIC):
The newest, smallest hearing aids, these are custom-made to fit deeply inside your ear canal so that they are practically invisible.

ITC In-the-Canal (ITC):
These are also custom-made and small enough to fit almost entirely in your ear canal. They can be hardly noticeable.
 
ITE In-the-Ear (ITE):
These are custom-made hearing aids made to fit within the external ear. They are the most widely recommended style.    

Behind-the-Ear (BTE):
These fit snugly behind the ear and are attached to a custom earpiece molded to the shape of your external ear.