ACNE STUDIOS Butterfly Knot Printed Dark Gray and White Denim PantsThis pair of pants is made of high-density cotton denim produced in Japan. The fabric weight is precisely controlled. It doesn't have the heavy armor-like feel, nor is it as soft and limp as a thin material. The entire pants use a thicker cotton-polyester sewing thread than the regular one, with uniform stitching force and dense needle spacing. The butterfly knot on the back pocket is sewn by hand stitch by stitch. The positioning of the butterfly knot creates a subtle contrast between the shiny clear line and the matte finish of the fabric. The mid-low waist design and the straight-to-slightly-conical cut are the same for both men and women.