Under Armour Cold Gear orange fitted long sleeve half zip base layer. Breathable

Women's ColdGear® Authentics ½ Zip What's it do? We all hate it. That stiff, distracted feeling you get when you're out in the cold. That's why, we built a baselayer that keeps you warm and dry without being bulky or riding up, so you can stay focused all season long. Features Keeps You Warm Ventilated