Features: A barrel of smoke in every tube, which looks just like smoke. Easy to use, no other tools are needed. Gently rub with two fingers together, smoke will be rising from between two fingers. Small size and compact, could be carried to anywhere. Could be cut into any size. How to Use? 1. Tear off a small piece off. 2. Use lighting tool to burn the piece completely. 3. Then blows away the ashes, after burning leaves YELLOW OIL. 4. Use two fingers to rub oil, can be emitted thick smoke.( One paper about use 15 times ).