Why more than one size?
While every human being is unique …it turns out the size of our ear canals is not. So Eargo devices come in 2 sizes: 12 and 15. Size 12 is going to be the right fit for most people. Size 15 is for those with larger ear canals.
Keywords: sizes, purchase, sizer
Source: Sizing Guide User Guide Part #: LBL0020 Revision: REV_A