Superheroes wearing underwear on the outside feels silly in concept, but in practice, it leads to memorable and nostalgic costumes.
A brief defence of classic comics costume design – Why removing superheroes' trunks creates a new problem (and how to fix it) – The Pop Culture Studio
ทำไมเครื่องแบบซูเปอร์ฮีโร่ในอดีตถึงใส่ “กางเกงใน” ไว้ด้านนอก!?
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Why does Batman wear his underwear on the outside? - Quora
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A brief defence of classic comics costume design – Why removing superheroes' trunks creates a new problem (and how to fix it) – The Pop Culture Studio
Superhero Costumes
Underoos - Wikipedia