The Diamond Supply Co I Am tee in black is an authentic Streetwear tee made with 100percent Premium Cotton. This tee features a Diamond OG Script woven label on the bottom left and a screen print to the front. This tee fits true to size. The Diamond Supply Co I Am tee in black is an authentic Streetwear tee made with 100percent Premium Cotton. This tee features a Diamond OG Script woven label on the bottom left and a screen print to the front. This tee fits true to size.