We founded Ejis based on the belief we could make you feel more confident by solving one of your most embarrassing problems. We've woven intelligent design, world class functionality and unrivaled comfort into our sweat proof undershirts to give you what we call wearable confidence Waterproof fabric stops your sweat from transferring to your shirt. Durable enough to be washed again and again Large one piece fully integrated and silent waterproof layer protects more area and won't leak.