A hand-colored cartographic map of Michigan displays the state's geological formations through layered regions of pink, blue, yellow, and green, bordered by a decorative frame with a legend and detailed topographical markings. The composition balances scientific precision with warm, aged paper tones, creating an intricate portrait of 19th-century geological understanding rendered in the careful linework of vintage surveying craft. 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.