Are there many people with O-legs?

Actually, it's quite a lot. Some people are serious, others are not. The MBT health shoes worn by Xu Haoying have a corrective effect. You can try. I think they should be good. I don't have O-legs, but many stars wear them. They should be healthy. They are found in general city shopping centers. You can check it online. A pair of six or seven hundred is worth it, but I think it will be very valuable if it really works. You can try.