Women's summer trousers - nylon + spandex - elastic outdor material, at the waist in an elastic hem in which there is also a sewn-in rubber so that the trousers do not fall.
The material does not have a membrane, it is not waterproof, it has only a light water-repellent finish.
You won't sweat in your pants in the heat.
The material loosens by wearing, adapts to the figure, after washing it returns again, which means that it does not pull out permanently and does not bulge, for example on the knees.