These tags are sold in sets of 10.  They are used all over the detention community in the US as well as medical facilities.  Each set is comprised  of the wrist band and a label insert.  Firstly write on the insert the identity of the prisoner and his/her prison number.  Next insert this label into the waterproof section of the tag, fold over the adhesive flap.  Then thread the strap through the opening and adjust, making sure that the name is showing!  Finally remove the paper shield which exposes the very strong adhesive, sealing the tag. Cut off any excess. You will not be able to remove the tag without a knife or scissors!