Wearing adjustable underwear for a long time has certain influence on blood circulation. If it is not the right size, the impact will be greater and more serious, so you can't wear it for more than 6 hours a day;
At present, there are many "adjustable" bras. Generally, the abdomen part is subtracted from the adjustable underwear, leaving only the part that fixes and adjusts the breast. An adjustable bra with good quality has absolutely no adverse effects, but you must pay attention to choosing the right size and try it on before buying.
Inferior "adjustable" bras have no adjustment function, and most of them just add an eye-catching label on the basis of ordinary bras.