Conventional is cotton underwear, cotton underwear is a traditional fabric, older people have a high acceptance rate and are comfortable to wear.

Underpants, as women's underwear, have an extremely close relationship with the health of women's private parts. Everyone knows this, and they often change their underwear. However, everyone is not clear about the life span of underwear. Some thrifty people even wear their underwear out of shape or wear before throwing them away. These are unhealthy practices. It has buried a lot of hidden dangers for health.