In addition, the speakers are made of aluminum. " The Vibram soles keep me from slipping on wet, fallen leaves. I looked at cheaper options and came back to these because they have the proper features necessary for preserving a guitar. She can?t wait to wear them hiking with her parents! And BTW the new mic works fantastic so far no issues. I Would not recommend. Parece tener como 4 número menos. The cut is clean and precise. I bought two pairs of JBLs, both were trash It?s on the wall but I?m afraid to put too much weight on it.