When fluids with different densities are separated vertically, with the lower-density fluid beneath the higher-density fluid, any minor imperfection in the surface between them will trigger a rapid overturning event, with each fluid trying to push through the other to get to where it wants. This results in "fingers" of fluid with undulating and swirly sides. The scientific term for this phenomenon is a Rayleigh-Taylor instability.
This bracelet is a computer simulation of this phenomenon, made using code that I wrote during my graduate school research. Because one end wraps smoothly into the other, the bracelet is continuous both physically and logically. In addition, because the bracelet is made from Shapeways' "Stong & Flexible Plastic", it can stretch to fit over your hand, so it needs no annoying clasp.
If you wear a standard 7'' bracelet, you probably have close to a 6'' circumference wrist. This bracelet will stretch to get over your hand and should fit your wrist perfectly. I also offer the same design for 7" and 8" wrists, and several other fluid dynamics designs, if this one doesn't suit your style.
The bracelet may arrive somewhat flattened. This is not a problem, just gently stretch it over a glass or your wrist for a few hours, and it'll return to its normal shape.