Obtaining a good seal in the ears is very important to experience the intended protection from Eartune Hunt U.
Included in the package are different sizes of silicones and memory foam tips, please make sure to try different types of tips to find the best fit and seal. With memory foam tips, please ensure to squeeze before inserting into the ears and to hold onto the Hunt U to allow the memory foam tips to fully expand to the shape of your ear canals to determine the right size.
Also, please confirm that L/R earplugs are worn in correct ears. Each earplug has a L/R indicator located on them.