Double-layer fabric with extra warm brushed inside and smooth, quick-drying outer layer.Stretch mesh panels on the back and armpits for better ventilation.The 4-Way Stretch design enables material elasticity in all directions.The material perfectly diverts sweat and it withers 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. Material: elastane, polyester