The triathlon charm is crafted in sterling silver. The triathlon charm is divided into three sections consisting of swimming, biking and running. The triathlon charm will make a great addition to any triathletes charm bracelet. If you are building your first charm bracelet our 050CH is a starter sterling silver charm bracelet that would compliment the triathlon charm. The back side of the triathlon charm has a small engraving area under the word triathlon that is stamped into the back side. The engraving area on the back side of the triathlon charm is perfect for the name of the event or the date. The triathlon charm dimensions are 20 mm in height, 18 mm in diameter and 1.5 mm in depth.