There are two different products, one is a core material called Bear Paw SpeedTuff (gee you think they want it to sound like Bo-Tuff from Gordons but its not) they also have fiber glass on a roll I guess the black is nice the clear has a blemish here and there but all clear does the rolls are sweet because you can get less waste. It sands and works differently then Bo-tuff just a heads up.