I've been using these for 20 years on my motorcycle. https://www.amazon.com/Koss-Plug-Ear-Headphones-Black/dp/B00001P4XA/ref=asc_df_B00001P4XA/

They work when I ride to the range, but I use simple earplugs or electronic earmuffs at the range so I can hear RSO commands. The Koss allows you to hear people but if something is playing you can't comprehend what they are saying.