The REI Co-Op Midweight Long-Sleeve Base Layer Top in size Small and color Malachite is a solid green pullover shirt designed for women's activewear. Made of polyester blended fabric, this athletic fit shirt features a crew neck and long sleeves, making it suitable for casual or active occasions. Easy to care for with machine washable instructions, this top from REI is a comfortable and durable addition to any woman's wardrobe.