LEGO Batman Underwear is a Clothing set released in a unknown year. It includes five pairs of underwear. The underwear are meant for toddlers and are 4T. [1]-Target
LEGO Set 71264-1 The LEGO Batman Movie: Play The Complete Movie Story Pack (2017 Dimensions)
Batman - Brickipedia, the LEGO Wiki
Collectible Minifigures: 71020 The LEGO Batman Movie Series 2 [Review] - The Brothers Brick
Batman - Brickipedia, the LEGO Wiki
71264 Dimensions Story Pack The LEGO Batman Movie Play the Complete Movie
Lego Batman Boys' Underwear, 5 Pack
5 pairs of ultra soft combed cotton underwear featuring characters from Lego Batman.
Lego Batman Boys' Underwear, 5 Pack
LEGO Minifigure DC Comics Batman bat002 From 2000s Arkham 7785 / Batcave / 7781
Review:LEGO Batman 2: DC Super Heroes, Brickipedia