The designer of this T-Shirt, Jayarr Steiner, runs a local screen printing service in Rochester, New York. He sent me a link to a video of this tee that he designed using thermochromatic ink.
“So basically the way this shirt design work is like this: When the wearerâ€™s body is below 90 degrees the design on the left is how it will look. When its above 90 degrees the image of Sinatra will disappear and his tie will turn red. I want you all to know this isnt a concept shirt , i will have a fully functional sample printed by this weekend so if you have any interest in seeing it in action come by the shop!”
But of course, seeing is believing. Check out the video below to see the Sinatra tee appear in full glory.