Kid's penguin printed art shirt

This kids/juniors shirt is slightly used. the tag of this shirt has worn off so the following is the approximate measurements: length (neck to bottom): 26 1/2 in. sleeve (length): 9 1/2 in sleeve width: 6 in neck (left to right): 7 1/2 in neck: 2 15/16 in my best guess is that it is a medium size. No strings hanging out but there is a small stain, circled in red, behind the shirt at the bottom but can be washed off, i believe. other than that is is in good condition!