Sprung steel memory wire is available in three diameters. Finish the ends with a neat loop or a memeory wire end cap (FN201 and FN202).
Necklace - suitable for an adult-size choker it will wear slightly more loosely on a child.
Bracelet 6cm - adult size it will wear slightly loose on the wrist.
Bracelet 4cm - suitable for a child's wrist.