The HYDRA has been carefully engineered to fuse all the benefits of a premium bubbler with the durability of aircraft-grade aluminum. In short, it's glass wrapped in a metal shield with a poly-carbonate main chamber. The HYDRA redefines what a long lasting and well-designed bubbler is meant to be. It also uses their patented "Quicklock" technology to put together and take apart which makes cleaning with soap and water a breeze. This three in one is the first of its kind.