The Portable Printer continuous Heat Shrink Labels in White are made of Military-Grade Polyolefin. They measure 0.19" (4.7 mm) Diameter, 8' (2.4 m) Length, and 0.34" (8.6 mm) Width and have a wire range of 18–12 AWG. The Fast-Loading MP™ Label Cassette includes both Label Material and Ribbon for Easy Label Changing.