The first thing is to ask the answer at the point of purchase. If it can't be solved, call the hotline 3 15 or make an industrial and commercial complaint. Finally, I want to make some suggestions. Female friends must go to the brand image franchise store to buy bras. On the one hand, it can guarantee your interests. The most important thing is that the quality of bras there is guaranteed. After being certified by the National Fiber Inspection Committee, if you buy inappropriate or low-quality bras, you will not only be unable to protect your breasts, but also bring you unexpected consequences. Breast cancer is one of them, so I won't introduce it here. Please don't pay attention to your breasts in order to save money. Please start caring for your breasts first!