They come in dark colors and a few sizes. There are men’s and women’s sizes available. Artist t-shirts are a tri-blend t-shirt. The fabric for tri-blend t-shirts is composed of three materials, typically a blend of polyester, cotton, and rayon. This tri-blend fabric is super-soft and doesn’t keep heat trapped between the fabric and your skin, making tri-blend t-shirts ideal for an active day or just relaxing.