Exclusively Sold online and at GM Company store located in Detroit at Renaissance Center General Motors Headquarters Level one facing the River Walk . Limited Quantity T-Shirt. Soft 50% Cotton/ 50% Polyester Blend. The modern graphic is an image of the Belle Isle's famous water fountain that stands the entrance of Detroit's Grand Prix. Behind the fountain is a graphic of General Motors Headquarters located on the Detroit River walk. Universal Straight fit great for everyone.