This is a GILBOA t-shirt. The following is quoted from the product introduction page: The polyester smooth fabric used this time is supple, has a nice drape, and a matte luster. By boiling the fabric, it has more volume than usual. *Smooth fabric is knitted similarly to a rib knit, but the stitches are finer and more tightly woven. As a result, it has thickness, but also a firmness that prevents the silhouette from collapsing. The pattern (template) uses a beautiful cutting style that conforms to the body, as used in jackets. This is a basic t-shirt that combines both the beauty of appearance and comfort when worn. It also has the advantage of being quick-drying, making it easy to care for when washing.