The Under Armour Women's Tech Twist Zip-Up Vest is a top-selling activewear vest on Amazon. It is made with UA Tech fabric, which is quick-drying, ultra-soft, and has a more natural feel. The vest features a full zip-up front, a stand collar, and a slim fit design. It is perfect for layering over your favorite workout tops or wearing on its own. The vest also has a moisture-wicking technology that helps keep you dry and comfortable during your workouts. With its stylish design and high-quality construction, it's no wonder this vest is a best-seller.