A T-shirt with an illustration of a fantasy pocket with enormous rhodochrosite crystals in Sweet Home mine by Wendell E. Wilson (you can see more of his art here). Size XL - 59 cm wide [A] and 78 cm high [B]. Spirifer Minerals logo is placed on the back of the shirt. There are two more versions - with Jonas mine and Montezumas Emerald mine, you can find all available sizes and types here.