I asked this question a couple of years ago but nobody seemed to know the answer.
Why do almost all towels have that little strip, an inch or two wide and a few inches from one end, that is a not actually towelling but made of a different type of fabric? (As seen here.)
As mentioned on he previous thread, it’s annoying (it often shrinks in the wash so you have to stretch it out to restore the towel to shape) and seems to serve no purpose whatsoever. Some towels don’t have it, so it’s obviously not essential, but the overwhelming majority do. Why?