Gotham Knights(202) ★ Free Access

Nightwing (Dick Grayson) from the Gotham Knights video game.

The "piece" you are likely looking for is a designed for cosplay or Halloween: GOTHAM KNIGHTS(202)

If you are looking for information about the source material rather than the costume: Nightwing (Dick Grayson) from the Gotham Knights video game

A full-body jumpsuit featuring the blue bird emblem and tactical armor detailing seen in the game's default "New Guard" suit. GOTHAM KNIGHTS(202)

Typically includes a one-piece jumpsuit and a matching eye mask.