Pale cream ammonites and spiral fossils arrange across a dark ground in this naturalist illustration, rendered with precise linework and intricate surface detail. The composition balances organic spirals and segmented forms with scientific clarity, evoking the meticulous scientific drawings of historical natural history texts. 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.