JEG: Kamoka has 2 T-shirt designs, and both designs come in either black or white. They're hemp/cotton. Really nice fabric. I bought the fish design in both black and white. The other design has a crab on it. Kamoka has men's styles (traditional T shirt shape) and ladies (the V-neck). The ladies T-shirt really fits a woman's figure well.
On the Kamoka website, click on the link for Shop and then click on Apparel, and the T-shirts are listed there.
Hum, the crab is kinda cute. I'll have to think about getting crabs (8 year old me is now giggling).