heatshrink tubing

[Mescalito]

ok so when you heat this stuff up to shrink it, does it shrink circumfrance-wise only or is there length-wise shrinkage too?

[Beemer]

Yes no.

It will not get shorter

[Chronobreak]

correct it will shrink in diamer but not in length, atleast not in any noticeable length that i have seen