Thanks for great response and now it's clear to me. Today I visit here https://www.bigearinc.com/product/electronic-hearing-protection which I get from a video source on YouTube. I also read so many articles about it on google today.
Anyone kindly help me about shooting earplugs. What kind of earplug is the best for shooting? Hearing protection is a very important part at the time of shooting. Kindly gives me a better recommendation of about it.
Thanks