A thin-walled, flexible heat shrinkable tubing with a 2:1 shrink ratio 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 tubing is delivered in a rolled form in a convenient cardboard box for use and storage. The primary application area of this product is electrical insulation and protection against mechanical damage and corrosion.