There is something special about the classics. Sure, the extra features in other bongs help, but sometimes you just want to smoke it like you have always been doing it. That is why we love the Submarine Gravity bong so much. There is something special about the classics. Sure, the extra features in other bongs help, but sometimes you just want to smoke it like you have always been doing it. That is why we love the Submarine Gravity bong so much. If you aren't into the new bong technologies and just want a simple smoking experience, then this is the bong that you were looking for. It is made of high quality glass. 9" Height 3"(dia.) x 8"(width) cylinder Help conserve your herbs or tobacco by holding smoke within the chamber