Are the sleeveless dogis uses by Cobra Kai in the show real?

[Hanzou]

I've never met him but I found some of his videos to be entertaining. I'm not in much of a position to either promote or discredit his information of Karate but I do find it interesting.

Made me ask questions to people who know more than I.

Peace favor your sword,
Kirk

His silly Gracie conspiracy vid, Boxing destroying Karate, and Karate ground fighting nonsense is all I need to know about him.