Golden fumed color changing water pipe is very cool. It will evolve and change the more you smoke it. Double bubble design. About 5mm thickness means it is very thick. Great deal of $49.99. Includes fumed slider! This will allow the slider to match your pipe, as they will change colors together. The pipe is beautifully hand crafted and the colors will change the more you use it. You will see the pipe change and evolve over time. It will grow with you after every smoking session. Clean it out and you can restart the color changing process all over again. Keep in mind the pipe in the picture you see is before the color changing effect and may look boring. It will look amazing after you smoke out of it. The pipe is pretty thick for the price, especially for a color changer.