Prepare a loofah, scissors, two layers of rolled cloth and a sewing machine. First, cut the loofah from the middle with scissors, then put the rolled two layers of cloth on the loofah, sew it with a sewing machine, and then sew it again by rotating the position, so that the insole is finished. The specific steps are as follows:

1, first cut the loofah from the middle with scissors.

2. Then put the rolled two layers of cloth on the loofah.

3. Then put it on the sewing machine for sewing.

4. Then rotate the position.

5. sew again.

6, so that the insole is ready.

Baidu encyclopedia-loofah insole