Best earplugs you can buy, the ONLY ones that stay in my ears. All others work their way out in minutes. I use them for sleep and they remain in my ears all night long.
As a Journeyman Electrician, I have used these during my time in the US Navy, as well as in my govt. civilian electrician/ generator mechanic. Also when I was a Military Airfield Electrician. VERY easy to rate these - They are the BEST in-ear protection I have ever used!
given a pair in basic training 1975. Tried many different ones over the years, these are the best. Nothing else comes close. Used some trash ones lately for shooting,like I had nothing. Insert these correctly and you cannot hear anyone unless they yell