Chest circumference, also called chest wrapping, is elastic, which can relatively fix the chest without shaking, and has the function of shaping the chest shape. It is usually worn when wearing a dress, a small suit or a three-dimensional dress, which makes people look beautiful. There is generally no shoulder strap around the bust, and if there is a shoulder strap, it is also very thin.

Vest: a special bra designed for adolescent girls, similar to a vest, but only covering the breasts to help breast development.

Bras are women's products to protect and beautify breasts. Generally, it consists of buckles, shoulder straps, adjusting buckles, metal wires at the lower part of the bra and fillers.

1. Bras can support and help the breast, which is beneficial to the blood circulation of the breast. For lying-in women, it can not only increase the amount of milk, but also avoid breast stagnation and mastitis.

2. Bras can protect nipples from scratches and collisions.

3. Protect the breasts and avoid sagging.

4. Reduce breast vibration during exercise and running.

5. Winter can prevent cold air from entering the skin and getting cold.

The word "cup" was defined by the French. Because the bra was invented by the French in the1920s, its original name was corset. Bra is abbreviated as bra, which comes from French. When the French invented the bra, they also determined the unit of breast or the breast size derived from it. The word "cup" is translated quite vividly by China people, because apart from the belt, there are only two cups covering the chest, and it is easy to understand to measure the size of the breast by the size of the cup.