Woolly Glove Darned with a Metal Finger

Brother and sister, Tanu and Sitha, once each had a pair of gloves. When one glove was lost, Tanu and Sitha used the three remaining gloves between them, holding hands inside the third wherever they went out. When another glove was lost, they only went out in snow one at a time. But down to one glove, they simply sat at home making sure the remaining glove would never be lost. The metal finger on this one may look harmless, but is unbreakable, the weight of an elephant and once on, refuses to leave the finger of whomsoever it has been placed upon.