Class A is one of the standards of safety classification, and Class A products have a higher safety level and are suitable for infants. B-level security level is slightly worse, suitable for adults. Both Grade A and Grade B belong to clothing products that can be used healthily. The safety level of Grade A is higher, and of course it is better.
A-grade underwear, in terms of materials and fabrics, is the standard used by babies, so adults feel softer and more comfortable than B-grade underwear, mostly made of pure cotton fabric, which absorbs sweat and is skin-friendly, and can effectively prevent allergies. Especially in the choice of underwear, women should pay more attention to whether the fabric is pure cotton. Although some styles are good, the fabric is made of chemical fiber, which may have a negative impact on women's lower body health and will affect our health over time.
Class B underwear has reached the standard of normal contact with our skin, but adults can choose clothes, shoes and socks. Adults have less delicate skin and better constitution, but they are not suitable for allergic constitution or children. If you choose underwear for allergic people or children, you'd better choose Class A products.
Some young people who pursue fashion and individuality are unwilling to wear ordinary underwear, but also want to choose thongs and C-shaped pants. But most of these underwear are not pure cotton, usually fiber fabrics, modal, lace and the like. Different styles and fabrics give people different feelings. Now there are some underwear made of bamboo fiber and carbon fiber. As long as it meets the normal standards, you can choose it according to your own needs. Try to choose underwear with good permeability and mainly cotton. Go to a regular store to buy, wash and dry frequently to ensure our health!