The Carhartt Women's Sandstone Mock Neck Vest is a rugged and durable option for women's thermal activewear. This vest is made from heavyweight cotton sandstone duck fabric, offering excellent durability and wind resistance. It features a mock neck collar and a zip front closure for added warmth and protection. The vest also has multiple pockets, perfect for storing tools or small essentials. With its tough construction and functional design, it's no wonder this vest is a best seller on Amazon.