A bracelet is an article of jewelry that is worn around the wrist. When it is worn around the ankle it is called an ankle bracelet or anklet. A boot bracelet is used to decorate boots. Bracelets can be manufactured from metal, leather, cloth, plastic or other materials and sometimes contain jewels, rocks, wood, and/or shells. Bracelets are also used for medical and identification purposes, such as allergy bracelets and hospital patient-identification tags.