I got a set of these last year from a Marine that was helping us out/Working with us (hurricane Katrina),I traded him for some AR parts and work. Well they are pretty nice as they have a sterio feature that allows you to hear like without hearing protection (actualy a little better) and they shut off as the DB level reaches 85 you can actualy clap and hear the differance. My only complaint is that they only block about 21-23 DB which is a good bit less than my custom silicone plugs or any quality insert foam plugs. Dads Bennie Cooley braked 300 ultra is pretty loud still as is the 11.5" M4 but their not as loud as a 22 LR without hearing protection. They are pretty comfortable on my big mellon and my wife had no complaints on her cute little head. Over all I think that they would be a good investment for sombody that shoots where they have alot of range comands or shoots in close areas with their buddies. I know I've been stung several time by yo-yo's that diden't hear the cease fire call or ignored it , these probably would have prevented that.