Yeah, it's marker. Actually, they're marker-pens. *to be exact* lol I love how they color. They are so vibrant and they seem to breathe life into my pics. The flesh is colored with crayola colored pencils. That is the only brand that I have found with decent flesh-colors. I have yet to find a marker set. I think I'm going to have to pony-up the dough to by Copics. They are expensive, but, I hear they are worth it.