There is not much difference. Midrib Polaroid is a kind of midrib underwear. Midrib underwear can help shape the body, that is, cultivate self-cultivation, bind excess fat, and look beautiful. In fact, it is what we call body-shaping underwear every day. But you should know that excess fat in the human body can't be excreted or reduced by wearing underwear. After fat binding, you can't see any problems in a short time. After a long time, it will inevitably cause unnecessary harm to the body. Wearing tights too tightly can also lead to palpitation, chest tightness and poor breathing.