The product is a LEGO instruction manual for the set number 21339 BTS Dynamite Ideas CUUSOO. It is a paper manual that provides instructions for building the BTS Dynamite set without any modifications. The manual belongs to the LEGO CUUSOO theme, which offers unique and creative building ideas. It is a must-have for fans of the BTS Dynamite set to ensure they can build it correctly without any missing pieces.