Blast From the Past

I always disregard any American Apparel ads I see running around as I find their clothes rather cheap and blah. But this shirt definitely caught my eye (not in an "I want to buy it" way, but a "what is that?" way). They call it "thermochromatic" now, but I remember when it was hypercolor. This shirt has given me the urge to go play on some monkey bars...

American Apparel, $34