https://www.deefiveshrink.com/woer-heat-shrink-tube.phpPolyolefin heat shrink tubing is available in black, white, red, blue, and yellow, as well as clear. More colours are available upon request. Polyolefin is a general-purpose, flexible heat shrink tube that can be used for a variety of applications, including professional and military electronics. Common applications include insulation, mechanical protection, and labelling.