Basic and in synch. Women's Black Boyshorts feature a secure stretch fit with an elastic waist. Black Boyshorts are made of 92% polyester and 8% spandex and fit most standard dress sizes (90-160 lbs). Women's Black Boyshorts feature a secure stretch fit with an elastic waist. Black Boyshorts are made of 92% polyester and 8% spandex and fit most standard dress sizes (90-160 lbs).