This is a men's Royal Creations Hawaii vintage short sleeve button up shirt.  It has a patch pocket at the left chest, spread collar, straight hemline, in a mixed print pattern.  The color is a more green / teal, but the photos came out a little bit darker, more on the blue side.  The measurements lying flat are:  Chest 23, shoulder to shoulder 19, neck 8, arm length 10, and length from top of the shoulder to hem is 30".  This is in great condition, please contact me with any questions.