The Men's Under Armour ColdGear Compression Mock Base Layer Top is the perfect way to stay warm and comfortable when working outdoors this winter. Made from a polyester and elastane blend, this Under Armour base layer top offers four-way stretch, wicks away sweat, and dries quickly to keep you comfortable. With stretch mesh back and underarm panels, this Under Armour base layer top provides plenty of breathability, while the mock neckline offers coverage and warmth. Make sure you're ready for your next outdoor run with the Men's Under Armour ColdGear Compression Mock Base Layer Top. Features: Dual-layer fabric Ergonomic design Anti-odor technology 4-way stretch for mobility in every direction Fabric wicks away sweat and dries quickly Mock neck for added coverage and warmth Brushed interior for warmth, smooth exterior for quick drying Stretch mesh back and underarm panels enhance breathability Specs: Imported Style #: 1366072 Fit: Compression Fabric: 87% polyester, 13% elastane Care: Machine wash cold, tumble dry low