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