This is a short-sleeved knit made of 100% cotton. The actual color is a slightly lighter shade of blue than in the photos. There is a small snag on the inside of the back (see photo 4), but it is barely visible from the outside (see photo 5) and should not affect wear. Shoulder width: 34cm Sleeve length: 23cm Body width: 40cm Length: 55cm This item has been stored at home for a long time, so please consider this before purchasing.