This is a shoe takes several days to make.Grinding the body of the shoe and sewing the sole by hand. Upper: The entire upper uses rare and expensive material : fetal calf leather, which is very soft and comfortable to wear on foot. Lining: Inside made of sheep leather.It`s soft to the touch.moisture-proof, breathable. Bottom: Rubber foam composite sole. It has the characteristics of lightness, wear resistance, corrosion resistance, etc., and the production process is complicated.