White technical line drawings of a fire hydrant appear across a dark charcoal background, rendered in the style of a vintage patent schematic with detailed mechanical views and cross-sections. The composition balances multiple perspectives of the industrial object with handwritten annotations and official patent markings, creating a cool, technical mood that celebrates industrial artwork history. 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.