The Columbia Women's Switchback III Adjustable Waterproof Vest is a top-selling activewear vest on Amazon. It is made with a waterproof fabric that keeps you dry in wet conditions. The vest features an adjustable drawcord hem and a full zip front for a customizable fit. It also has zippered hand pockets for secure storage. This versatile vest is perfect for outdoor activities like hiking, camping, and running. It is available in various colors and sizes to suit your style and preference.