The Under Armour Mens ColdGear Base 3.0 Series Packaged Long-Sleeve Crew Shirt is completely re-engineered, totally rebuilt, and still best in class. UA Base layers are designed to keep you warm, no matter how cold it gets the higher the number, the greater the warmth. Base 3.0 Series base layers are the middle level Under Armour offers. Theyre extremely versatile, providing midweight warmth and mobility at a variety of activity levels and cold temperatures. 100% polyester material wicks sweat and dries fast, featuring 4-way-stretch fabric that moves easily in every direction. A soft, brushed-grid interior traps air against your skin, closely managing your bodys microclimate to keep you warm and comfortable. UA Scent Control Technology helps keep you undetected as you scout or hunt. The Under Armour ColdGear Base 3.0 Series Packaged Long-Sleeve Crew Shirt for men boasts flatlock seams and a crew neck for ultimate comfort. Machine wash. Imported. Sizes: S-3XL. Color: Black/Pitch Gray. Type: Base Layer Tops.