My custom plugs are actually speaker plugs that I use on a motorcycle. I've had about three sets over the last 20 years and love them. I can wear them 12 hours a day with little discomfort. This is not what I use for shooting sports though. For shooting I double up; foamy ear plugs with electronic Howard Leight Impacts over the top.
This is the current set of speaker plugs I'm using
https://www.plugup.com/custom_earplug_sp....5-4.5.htm
This is the current set of speaker plugs I'm using
https://www.plugup.com/custom_earplug_sp....5-4.5.htm