This bangle is a representation of turbulent flow of a liquid over a moving surface. The inside of the bangle -- representing the moving surface -- is smooth, while the outside is gnarled with the wild loops and whorls of turbulence. This is the third in a series of three designs that illustrate the same turbulent flow at different moments in its development. This design, representing fully developed turbulent flow, is the gnarliest, while the first and second show moments during the development of the turbulence and are smoother.
This model is 2.3 inches (59 mm) across on the inside. I'm happy to resize it for larger or smaller wrists; just ask! The bangle is only slightly flexible.