Reply To: Why Is Tzitzis Mandatory?

I saw the post about “day beged,” that was what prompted me to start posting in this thread again. My first response to that post was why a tallis katan is a ksus yom. It is a shirt, as evidenced by the fact that many people, Jewish and otherwise wore them as such for centuries and re-enactors still do today. Thus, it is a shirt whether we wear another one on top of it or not. I’m not sure where shatnez comes into it though.