LL NEW! In lieu of permanent or temporary tattoos, apply PortalMark™ labels to delineate radiation treatment areas. Their premium medical-grade adhesive is hypo-allergenic and latex-free, resulting in less irritation for the patient. PortalMark™ labels are constructed of waterproof, yet breathable material for maximum performance and comfort for up to two weeks. Our unique Suregrip™ applicator discs ensure easy and accurate placement of PortalMark™ labels without contaminating the adhesive.