The Columbia Women's Heavenly Vest is a top-rated option in the women's sleeveless lightweight safety packable activewear vest category on Amazon. Made from a combination of polyester and elastane, this vest offers both comfort and flexibility. It features an Omni-Heat thermal reflective lining, which helps retain body heat and keep you warm. The vest also has a full zip closure, zippered hand pockets, and a stand-up collar. With its excellent ratings and positive customer reviews, it is a popular choice for women looking for a versatile and functional activewear vest.