Piss on the San Francisco 49ers Shirt with Calvin Pee T-Shirt. Perfect for any football fan especially fans of the Raiders, Rams, Cardinals, Cowboys, Ravens and Patriots.

Want a shirt with Calvin pissing on something else? Check out our Custom Piss On Calvin Shirt.

• 6 oz. 100% Cotton Tubular Jersey
• Double-needle bottom hem and sleeves
• Shoulder-to-shoulder tape
• Preshrunk to minimize shrinkage