Sports bra is a good choice for boys, and boys should wear it as much as possible, especially in summer, when boys' nipples are exposed, which is really indecent.
It is also suggested that boys wear swimsuits when swimming, which looks better.
Pure cotton material is preferred. The texture is skin-friendly and breathable. As for the choice of boxers, it won't be too embarrassing to wear. Good friends don't feel abnormal when they see it.
Choose a mirror for the pattern or choose a cartoon ambassador. Choose underwear, choose sports style. It's comfortable to wear and won't be too tired to breathe!