Did you know that inside every transistor is a little man whose job it is to watch the incoming base current and adjust the collector-emitter impedance to match the datasheet? Its true! And now you can celebrate the hard-working guy with this fabulous Transistor Man tee shirt.The front of the shirt has the now legendary Transistor Man diagram from Horowitz & Hill's "The Art of Electronics".Not only did we get a blessing to make these from Cambridge Press, we even got a scan of the original artwork transparency from Professor Hill! These are without a doubt, the coolest NPN shirts we've ever seen.These shirts are directly printed onto high quality American Apparel T's. The women's are 100% cotton, the men's sizes are a 50/50 poly-cotton blend. We find these shirts to be a little more expensive than the common 'Hanes' T's but they're much more comfortable and better fitting -- especially the women's sizes! All shirts are black with white ink. Please check the links above to American Apparel for detailed fitting information.