'Pipe.' Dry Herb PipeCrafted with Vessel's signature attention to detail, Pipe. stands out from the crowd and offers unbeatable style and performance. Its unique, patent pending double helix design provides the optimal balance of filtration and cooling, offering an experience like no other! Vessel Pipe. The Vessel Pipe. is constructed of anodised aluminium with a commanding presence, as well as a precision engineered, non toxic brass double helix insert. The inner bowl