Leggings can be worn by boys. But boys' leggings can't be worn outside, only inside. Leggings are pants that keep fit by wearing short skirts and miniskirts, so few boys wear them. But wearing leggings inside can be matched with formal clothes in different ways, so not only girls can wear them, but also boys can wear them, and many boys say that wearing leggings is better than long pants to keep warm. Classification of leggings. According to the length, there are breeches, middle pants, seven points, nine points, three points and five points. According to the material, there are lace, openwork, tulle, knitting, velvet, cold silk and so on. According to styles, there are leggings with beautiful legs, printed leggings, leggings that can be worn outside, and sexy, slim, comfortable, elastic and elegant skirts. According to the thickness, there are ordinary, velvet and so on. According to the color, there are black, dark green, skin color, purple, wine red, gray and so on.