[Avodah] Tzitzis - MB

[Michael Kopinsky]

The MB writes (and I paraphrase, since I don't have it with me at the
moment), "The excuse (of those who tuck their tzitzis in) that they are
doing it b/c they're around goyim is no excuse, because if so, they would
just tuck the tzitzis into the kanaf (rather than into their pants)."

What is the kanaf that he is referring to?  Did their tzitzis have a
pocket on the corner (like NeaTzit (R)) to tuck the strings in?

KT,
Michael