A detailed technical patent diagram of a double bass fills the composition with intricate line work and labeled components rendered in black ink on white paper. The drawing captures both the instrument's full body and numerous close-up details of its mechanical parts, creating a dense, schematic mood that celebrates the bass as an engineering marvel as much as a musical object. Built from double-wall stainless steel and made to order, holding 20 ounces with a snap-on lid, a standard-cup-holder fit, and wraparound artwork. Your commute carrying original art instead of another branded tumbler.