All of our jeans are made of 1st class denim fabric made from cotton yarn. since it is washed at high temperatures before being offered for sale, there are no problems such as shrinkage and dyeing. it is a type of fabric that absorbs moisture and breathes. denim fabric, known for its durability, is long-lasting. washing instructions: after buttoning the product and closing the zipper, it should be turned upside down and washed. it can be washed at 30° delicately. can be hand washed. dry cleanable. can be dried by hanging. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.