Each dog tag comes with a silicone rubber silencer surrounding the tag and has a blue enamel filled "Star of Life" on one side to alert emergency medical personnel to the wearer's special needs that could expedite proper treatment . The reverse side of the dog tag has a message to "See Wallet Card". A standard wallet card with fields to write the user's health information as well as any special needs such as allergies or illnesses comes with each dog tag.