Underwear is known as the “second skin” of the human body, and its importance is self-evident. A good underwear, with high quality requirements in terms of comfort and appearance, can help women adjust the curves of their breasts and body.
Many people see “shapewear” and develop stereotypes that it’s all thankless “IQ tax”. Therefore, taking shape-shaping underwear as an example, this article takes the structural principle of shape-shaping underwear and sees whether the bottom is “IQ tax”.
As a type of bra, shape-shaping underwear consists of more than twenty parts, each of which is irreplaceable and plays a key role in providing support and storage functions.

The shaping of a shape-shaping underwear requires many complex mechanical processes and handicrafts. It is precisely because of these complex production processes that beautiful and exquisite shape-shaping clothes are created.

There are five common types of cups on the market, namely: 1/2 cup, 5/8 cup, full cup, triangular cup, and 3/4 cup. Before buying shapewear, you need to judge the type and size of your breasts, so you can choose the right shapewear to wrap and support your breasts and shape your chest lines.

The shoulder straps are where the cups and back ratio are connected. It carries a large portion of the weight of the breast, helping the cup to improve the breast and increase its stability, preventing sagging. Moreover, the shoulder straps are of different thicknesses and the overall lifting force on the chest is also different.
Buckle

When it comes to underwear buckles, women’s unified understanding is that the more buckles, the better the gathering effect. In fact, this is not the case. Different ribs correspond to different applicable groups of people. For example, single and double ribs are more suitable for women with small breasts and thin bodies; three-breasted ribs have the functions of supporting height, concentrating and gathering, and are suitable for most of us; while four-breasted ribs are the only choice for problems such as big breasts, accessory breasts, sagging, and expansion.
Side ratio

Structural support + stable cup + fat management + side-harvesting of side milk. The side of the bra, which serves to set the shape. The higher the side ratio, the more stable the underwear. For an enlarged or fuller bust, it is suitable to choose a style with a higher side ratio height, which can cover more underarm fat.
Chicken Heart

It is the connection position between the two cups, and has the function of controlling the shaping of the cups on both sides so that they do not shift. Some people have high sternum, and wearing underwear with a high heart position will feel very poking and uncomfortable. In this case, it would be more appropriate to choose underwear with a lower heart position. For people with fuller breasts, it is suitable to wear high-heart underwear, which has a better supporting effect.
Bikuan
The cup is located close to the arm. Widenning can improve the inclusiveness of the bra. It can gather underarm fat and fix it, provide support and accommodate the underbreasts, and make the breast look more rounded.
Post-ratio
Also known as the rear wing or rear pull tab, it helps support and fix the chest, and is generally made of a fabric with greater elasticity. Type One: Poor stability, U-shaped: Good stability, Y/X-shaped: Beautiful back underwear design, recommended for people who can slip shoulders.
Steel ring
Underwire is an important part of supporting and securing the breast. The shape is designed according to the curvature of the human breast and is semicircular. Hard underwire: cannot be broken with one hand, it feels oppressive when worn, soft underwire: Q bullet can be broken with one hand, it has a good gathering effect, extremely soft underwire: soft enough to tie knots, it gathers less, suitable for small breasts.
Bakelite
There are usually 1 to 2 pieces of rubber bones, which feel hard and are generally made of rubber material. They serve as a shaping function and connect the back to the middle part of the lower rack. The rubber bones of adjusted underwear will be particularly widened and raised during design and production.
Lower steak
Prevent breast sagging, move excess fat into the breast and fix it. Underwear can be wide or narrow, and underpinnings can lift sagging breasts to the right height.
Women with plump or overweight parts, or those with less obvious curves and the idea of shaping and improving their bodies, can choose underwear with wide shoulder straps + U-shaped back ratio + medium to high side ratio when purchasing underwear.