The Gravitron was Grav Labs' first product. The cult following is going on strong even after a decade . Gravity bongs are regarded as one of the most efficient smoking devices, it will deliver every molecule of smoke to the user. It's fat chamber allows you to draw a generous amount of smoke for a smooth hit. Best of all, parts are easily replaceable and affordable. Stands 13.5'' inches tall when fully extended! Decal colors (Blue, Green, Red, Black) may vary, if you have a request please note it before checkout. If the color your prefer is not available we will send you a different color. Designed by Grav Labs and made with the finest borosilicate glass. *Decal colors may vary