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, shells, crystals, metal or plastic hoops, pearls and many more materials. Bracelets are also used for medical and identification purposes, such as allergy bracelets and hospital patient-identification tags and also bracelet tags worn for new born babies.