Women's Christopher & Banks Button up Blue Shirt Size XL. Stretchy. This women's shirt by Christopher & Banks is a classic very dark navy blue button-up with 3/4 sleeves and a collared neckline. It is made of 68% cotton, 27% polyester and 5% spandex featuring pockets on the front. The shirt is perfect for casual occasions and comes in size XL, fitting a regular size type. Its brand, Christopher & Banks, is known for its high-quality clothing for women. The shirt's color is dark navy blue, which gives it a classic and timeless look, making it a great addition to any wardrobe. Color is almost black.