It is questionable during the year whether one needs to wear a Gartel. Let’s assume that it is your family minhag or acquired minhag to continue to do so even today. This article is not about the need to wear one.
On Yom Kippur, certainly those who wear a Gartel also wear a Kittel. Almost every Kittel I have seen, includes a white gartel, made of the same material as the kittel. If so, on a day when we are meant to wear white (via a Kittel) largely because it reminds us of the deathly shrouds (which is why Shulchan Aruch paskens that even women can wear a Kittel) why is it that people also put their black gartel on top of their kittel. That is, a gartel on a gartel?
On Rosh Hashana, when I am the Ba’al Tefila for Musaf, I wear a Kittel. I don’t wear an extra Gartel. On Yom Kippur, I confess that I also wear a black gartel over my kittel. The reason that I do so has nothing to do with Halacha. It is an emotional expression. My Zeyda Yidel Balbin passed away on Yom Kippur. As a young man, when I entered the room that he was in when he passed away on Motzoei Yom Kippur (he had already been removed by the Chevra Kadisha). I stood there alone for quite some minutes feeling the emptiness of the room. His hat and walking stick were in the room. As I walked around, I also found his Gartel. I took that Gartel and I wear it on his Yohr Tzeit (Yom Kippur).
Why do others wear a black gartel on top of their kittel? If they do so because their Rebbes did so, then why did the Rebbes do so?
Along these lines, why don’t some Chassidim substitute their black yarmulkas for white yarmulkas?
Does anyone know?