A technical patent drawing of a camera dominates this chalkboard-style composition, rendered in white linework against a dark charcoal ground. The schematic shows front and side views of the camera body with detailed mechanical components, flanked by patent information and filing dates in the upper corner, creating the appearance of vintage blueprints rendered on chalk. 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.