Ever wonder how Dr. Sheldon Cooper's mind works? Get inside his brain with this cool diagram attempting to explain his unigue genius. The perfect t-shirt for fans of the geekiest show on TV. This silver, standard adult fit shirt is made of 100% cotton. Be sure to check out our Size Chart to get an idea of the average size and dimensions of this Big Bang Theory: Mind of Dr. Sheldon Cooper tshirt style. Check back often for some of our new Big Bang Theory clothing and other Big Bang Theory merchandise at great prices only at AnimationShops.com.