Heat shrink tubing, rarely referred to simply as “HST” even in our acronym-intensive world, is made of cross-linked polymers ...

Heat shrink tubing is made of cross-linked polymers, which are polymers in which the monomer units are cross linked together ...

The only downside here is that the biggest tube that came with your average heat shrink multi-pack is probably ... on generously stripping stranded wire and wrapping the long strands around ...

Honestly, when the documentation for soldering some USB connectors onto a wire looks this good ... a coil the cable with a wooden jig and a heat gun is definitely something to file away for ...