I just wanted to share my experience with Westone DX1. I shoot USPSA and I’ve used walker silencer for about 6 months. They do work as advertised but the issue is having them on for long periods of time, it started to hurt. Used ear muffs too but hot summer in central cali, no joy. Finally went with custom mold Westone DX1 could not be happier with them. When the battery dies pop the old one off and put a new one in, that easy.