A thin-walled, flexible heat shrinkable tube with a shrink ratio of 2:1 made of cross-linked polyolefin. It is available in 10 sizes with diameters ranging from 1.2 mm to 25.4 mm, in black, red, blue, transparent and yellow-green colors. The tube is supplied in a rolled-up form in a convenient cardboard box for use and storage. The main area of application of this product is electrical insulation as well as protection against mechanical damage and corrosion.