WARNING! This product will melt when exposed to extreme heat or open flames, posing a risk of serious injury where melted product comes into contact with skin!. Lightweight UA Tech™ fabric with an ultra-soft, natural feel for unrivaled comfort. Signature Moisture Transport System wicks sweat away from the body. Anti-odor technology prevents the growth of odor-causing microbes. Smooth, chafe-free flatlock seam construction. Polyester. Imported.