Here is an awesome vintage t-shirt. The tag is all but gone, but this is most likely a 50/50 poly and cotton blend. White shirt with great "Blue Water is Paradise" graphic on the front and back in blue and yellow. Super soft and comfy. It's in excellent shape with tons of life left! Here are the measurements. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 21"
Shoulder to end of sleeve (including cuff) 9"
Length 28"

This item is sold from a vintage boutique in Roanoke, VA.