Gynecologist
"We must replace our underwear at least every 3 months because bacteria accumulate a lot in the private area can cause dangerous disease such as infertility."
SO WHAT'S DIFFERENT?
Breathable cotton fabric, let your private part "breathes"
Elasticated sewing design, does not cause dark skin butt
Others
Air cannot circulate, sweat a lot, causing diseases in private area
Too tight panties can cause darkening skin