Here is a Jantzen beach towel featuring a pin-up girl in a swimsuit being oogled by 3 military guys.  The caption says, "Girl of his dreams."

I don't know when the towel was made, but I can safely guess it's not from the time period depicted by the image.

It measures about 67 inches long x 39 inches wide.

Lots of life left in this towel!  Some scuffs, pilling, and thin spots.  

Jantzen Pin Up Girl Beach Towel Bathing Beauty Girl of His Dreams Military Hunks