CHAIN IS NOT INCLUDED Available in Solid 14K Yellow or White Gold, or Sterling Silver Size Reference: 17mm is the size of a US dime 19mm is the size of a US nickel 25mm is the size of a US quarter Each medal is engraved with a Saint Sebastian on the frontside Saint Sebastian is the patron saint of athletes. Saint Sebastian was a Christian saint and martyr, who is said to have been killed while the Roman emperor Diocletian engaged in the persecution of Christians in the 3rd century. He is commonly depicted in art and literature tied to a post and shot with arrows just like on this medal. He is patron saint to Soldiers, plagues, arrows, athletes and unofficially youth.