Why do women's underwear straps always slip？

Many girls are troubled by this problem. The women's underwear that they wear often is obviously bought according to their breast size, but the shoulder straps of the underwear will often drop, which is very inconvenient, so why do women's underwear straps often drop Woolen cloth? After our repeated serious and speculation, the decline of underwear straps is related to the following factors.

1. Body condition

The shape of the body will affect the shoulder straps. This is mainly for women's shoulders. Generally speaking, there are four types of shoulders for girls. Among them, the second and fourth types of girls wear underwear, and their underwear straps are more Easy to slide down. Some girls have narrow shoulders, and they don’t look good in clothes.

2. Action posture

Normal movements and postures will also affect the slippage of the underwear straps, and after research, it has been found that when the upper limbs of girls are raised, the bust will change to a certain extent. When the upper limbs are raised 150° sideways, the average bust of girls will change. Reduce by 0.15cm. In other words, when you exercise, your bust is usually smaller than when it is static, which causes the cup to move up and the shoulder strap to slip off.

In addition, when girls exercise vigorously, their chests will tremble. When running, girls with 36C cups will have their chests jumping up and down at an amplitude of 11.9cm, and girls with 34A cups will have their chests jumping at an amplitude of 4.2cm. These large jumps will change the stress state of the underwear, causing the girl's shoulder strap to slip off.

3. The choice of underwear

Although the choice of underwear is a problem that the public knows, there are also some details. Although there are many underwear that look cute and are one-size-fits-all, please try carefully, because every girl has her own 8 personalities. Even if the breast size is the same, the shape will be different.

In addition, even if the cup is similar, you cannot choose the one that is not suitable for you. Although the cup capacity of 70D and 75C is similar, the bottom circumference of 75C will be larger than that of 70D. And most of the bra support for the chest is not the shoulder strap, but the bottom circumference.

So if you have a 70D bottom but wear 75C underwear, the underwear will easily move up as soon as you raise your hand. If you can't support your chest, the shoulder straps will slip off more easily. Even if the size and shape of some underwear are just right, but due to design problems, the shoulder straps are easy to slip off.