Bold black and white wavy lines flow across the composition in rhythmic, undulating patterns that seem to shift and ripple like liquid marble or topographic contours. The high-contrast strokes create an optical motion, with alternating bands of solid black and negative white space generating a hypnotic, almost three-dimensional effect. 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.