Flowing layers of purple and lavender ripple across the canvas in organic, undulating waves that suggest the banded structure of natural stone. The composition moves from deep violet at the top through lighter lilac and periwinkle tones, creating a sense of depth and movement that echoes the geological formations found in amethyst geodes. 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.