The Columbia Women's Mighty Lite III Vest is a lightweight and packable sleeveless vest that is perfect for outdoor activities. It is made from a combination of polyester and nylon fabric, which provides warmth and water resistance. The vest features Omni-Heat thermal reflective lining, which helps retain body heat and keep you warm in cold conditions. It also has zippered hand pockets and an interior security pocket for storing small essentials. With its versatile design and functional features, the Columbia Women's Mighty Lite III Vest is a top choice among active women.