A thin-walled and flexible heat shrinkable tube made of cross-linked polyolefin with a shrink ratio of 3:1. It is available in 1-meter lengths, in 9 sizes, with internal diameters ranging from 1.5 mm to 101.6 mm, and two basic colors: black and yellow/green. The heat shrink tubes are supplied in boxes, convenient for storage and presentation at exhibitions. TREDUX thin-walled tubes are used as basic electrical insulation and to protect cables and wires from mechanical damage.