IGN - Superman is wearing his black "recovery suit" in a new teaser for Zack Snyder's Justice League ahead of the film's full trailer reveal on Valentine's Day. | Facebook
DC Comics Superman Black Suit Justice League Recovery Suit Clark Kent DC Jumpsuit (Cloak Included) - Costumeslive.com
The Real Reason Superman Wears A Black Suit In The Justice League Director's Cut
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Does Superman have a black suit? If he does, why? - Quora
IGN - Superman's iconic Black Suit is also known as his Recovery Suit. It can recharge Clark's solar powers when they have been weakened. This suit will be featured in Zack Snyder's
Darkening Skies: Explaining Superman's Black Suit | DC