Brother laminated tapes consist of six layers of materials, resulting in a thin, extremely strong label. Characters formed with thermal transfer ink are actually printed onto the underside of the laminate. Sandwiched between two layers of PET (polyester film) this lets you create characters that are virtually indestructible. Laminated tapes are water resistant, it can be used outdoors, as well as indoors. It shrugs off spills of any kind; from water, to oil, to chemicals and won't fade under harsh UV rays.