How to remove the mat?
You are definitely not flat-footed, but it may be a high arch, and there must be a collapsed arch.

Try not to go to a pedicure shop for pedicure, because the foot pad belongs to tissue hyperplasia, and pedicure can only relieve its pain for a long time, but can't eradicate its symptoms. If you are a lady, I suggest you stop wearing high heels. Go to some professional foot plastic medical institutions and buy functional silicone insoles. After a month or half a year, your foot pads will become soft week by week, and then gradually fall off.