The Under Armour Lady ColdGear Mock Neck Long Sleeve Compression Top features enhanced muscle support compression fabric for increased blood flow and greater efficiency while you exercise. This top also features anti-odour technology with anti-microbial formula to reduce and irradicate odours that build up. The Brushback knit fabrication technology traps heat for enhanced warmth. The Flatlock seams and raglan sleeves increase comfort and mobility and reducing cold air exposure. The material fits to the body line to increase body warmth and reduce cool down time of core muscle groups.