1.a. Fold and sew the cloth to form a cylindrical shape
b. Open the seam allowance, fold the edge of the cloth in half the width of an elastic band, and sew. Leave 2cm at the seam for wearing the Variable Webbing Pull.

c. After the Variable Webbing Pull is inserted, the elastic band is overlapped and sewn. The box-type sewing method is used. If you use a narrower one, you can sew straight lines back and forth directly after overlapping. The following sewing method is that the elastic band does not overlap, and it is directly stitched back and forth with a few stitches of seam in a zigzag shape. Finally, sew up the mouth of the elastic band.
2. First sew the cloth into a cylindrical shape, divide the cloth and the Variable Webbing Pull into two equal parts, and fix them with a needle in the middle. Use a Z-shape to sew the elastic band on the edge of the cloth, then fold the elastic band inside, and sew a straight line. Remember to straighten it when sewing.
3. This one is the same as the previous sewing method of the second one, except that a thin Variable Webbing Pull is used when sewing the last line. Gently wrap this elastic around the shuttle in the same way as the bobbin thread. The elastic bottom thread is sewn on the wrong side of the fabric.
4. The required cloth must be the width of the elastic band + 2 cm seam allowance. First fold the fabric in half and sew. Then use a pin to turn the sewn tube over to the front