The Amazon Essentials Women's Lightweight Water-Resistant Packable Puffer Vest is a popular choice for those seeking a sleeveless lightweight safety packable activewear vest. This vest is made from 100% nylon and features a water-resistant outer shell, making it suitable for various outdoor activities. It has a full-zip front, two side pockets, and a stand-up collar for added protection. The vest is also packable, allowing for easy storage and portability. With its affordable price and practical features, it's no wonder that this vest is a best seller on Amazon.