The Portable Printer continuous Heat Shrink Labels in Yellow are made of Military-Grade Polyolefin. They measure 0.13" (3.1 mm) diameter, 8' (2.4 m) Length, and 0.25" (6.4 mm) Width and have a wire range of 22 - 18 AWG. The Fast-Loading MP™ Label Cassette includes both Label Material and Ribbon for Easy Label Changing.