Hey again thepolishgirl
You know, pics like yours' and other examples like He-Man Revelations kept reminding me that He-Man's harness looked like some kind of chest/torso armour but I can't recall why I kept being reminded of that. Until now when I finally remembered what type of Bronze Age and/or classical age chest/torso armour He-Man's chest harness looked like. It's the kardiophylax cuirass and triple-disc cuirass.
https://www.artstation.com/artwork/wJPk9g
https://www.artstation.com/artwork/vJDe3v