The Arc'teryx Atom LT Vest is a top choice for women seeking a versatile and high-performance sleeveless insulated vest. It is made from a combination of nylon and polyester, providing both durability and warmth. The vest features a zippered front, two zippered hand pockets, and a stand-up collar. It is also lightweight and packable, making it easy to carry on outdoor adventures. With its innovative design and superior insulation, it's no wonder this vest is a best seller.