"Adjustable bra" is a new bra designed and developed according to medicine, lipology, ergonomics and professional underwear. Its principle-fat replacement. In ergonomics, especially for women with thick fat, fat can be moved. Therefore, after wearing the correct adjustable bra for a period of time, if the body shape also has this phenomenon and the weight has not changed, this situation is a typical fat transfer. In general, adjustable underwear is very useful for women in their twenties and thirties, but it is also very useful for women in their forties. Older women who are not so strong, because of breast atrophy, have poor regenerative ability and the effect is not so ideal. Long-term use can not only enhance breast plasticity, but also prevent breast diseases.