A brown flounder rendered in precise scientific detail displays its characteristic flattened body, textured scales with warm ochre spotting, and delicate ribbed fins rendered in slate blue and charcoal. The fish is positioned in profile against a pale ground, capturing the methodical observation of 18th-century natural history illustration with careful attention to anatomical accuracy and subtle color gradation. 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.