I also use the Howard Leight sport muffs when I go hunting with the kids. They're great since we can whisper more quietly than we could without them and we don't have to worry about hearing damage when it comes time to take a shot. They also pack up very compactly so they're easy to carry in a backpack.
When I go to matches or to the range with my wife, we use Pro-Ears muffs that also work great and have a higher dB rating. (She's much more sensitive to the noise and shoots better with a higher-rated muff.)
Once you get some electronic muffs, you'll never want to go back.