After this period has expired, silicone products do not cover the auditory canal so tightly, which negatively affects sound amplification. One size (11mm) only: fit the widest variety of ear canals to increase speech clarity and overall comfort.
After this period has expired, silicone products do not cover the auditory canal so tightly, which negatively affects sound amplification. One size (11mm) only: fit the widest variety of ear canals to increase speech clarity and overall comfort.