Two-layer fabric with an extra warm brushed interior and a smooth, quick-drying outer layer. Stretch mesh panels on the back and armpits for better ventilation. The construction with 4-Way Stretch technology allows the material to be elastic in all directions. The material wicks away sweat excellently and dries very quickly. Anti-odor technology eliminates the growth of odor-causing bacteria. Ergonomic design with seams outside the most stressed parts. Turtleneck collar for better coverage and insulation.