We're sure that the black and red symbolize something - at any rate, both of those colors are on this shirt. The Cardboard Tube Samurai was created sort of by accident, but we kind of like him now. I think we'll keep him. 100% heavyweight cotton black t-shirt with Cardboard Tube Samurai designs printed on the front and back in red, yellow, white, and grey. Penny Arcade logo also on back in red.