>>32981664No, they're not kinda like sweatpants. Sweatpants are loose and baggy, usually made of cotton, made to be comfortable and flexible.
Most leggings, though, aren't even pants. They're more like really large and skin-tight socks. Made of nylon. These are made mostly to look good and they also serve the same purpose as socks. In this particular case, Rosa has a pantyhose.
How have you not heard about this? It's literally in EVERYTHING coming out of Japan these days.