The material of underwear is the main criterion of its quality. First of all, this, of course, concerns natori unlined underwire. Everything that comes into contact with mucous membranes should not be made of synthetic, breathable materials. Otherwise, there is a thermostat effect: insufficient air exchange increases the existing inflammation, provokes the development of pathogenic flora, and can increase allergic manifestations on the skin. Natural cotton fabric can also absorb natural female secretions, which cannot be said about synthetics.