For jeans with too tight elastic bands, we can use a small stick to lining the jeans, and iron them twice with an electric iron. It can be changed to the length you want; or open it up and blow it with a hair dryer. 

For the elastic band jeans that have been washed too frequently, we can change an elastic band by ourselves. The specific steps are as follows: after sewing the jeans, the waistband is not sewed, the front face is placed, and the two sides of the elastic band are overlapped and then surgically sewed, and the length of the elastic band is It is to reduce the hip circumference by 10%, use the elastic band as the positioning point of the upper 4 equal parts, and also make the positioning point of the 4 equal parts on the waistband of the trousers. Movement: The top is close to the top of the building, and the front face is placed. The elastic belt is placed on the waist of the trousers like a transmission belt. Use a large Z-shaped needle to sew, and the rear elastic belt is turned inward and the large needle is passed once.