Technical line drawings of an electric guitar appear in white on a charcoal ground, showing the instrument from multiple angles including full body, headstock detail, and side view. The composition captures the precision of a vintage patent diagram with handwritten annotations and date stamps, rendered in a monochromatic palette that evokes both industrial documentation and artistic sophistication. 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.