Sterling Silver Twig CuffNature, preserved. An actual twig from the artist's backyard is cast into sterling silver, so no two are ever alike. Available in four sizes; extra small will fit 6 6. 5" wrists, small will fit 6. 5 7" wrists, medium will fit 7 7. 5" wrists, large will fit 7. 5 8" wrists. To determine your size take a string, tie it around your wrist, then cut it and measure the length of the string when flat. The cuffs are also adjustable by SLOWLY and CAREFULLY