Don't worry about the underwear line Underwear for leggings Unsealed panties using laser cutting and flat adhesion do not reveal the line 100% cotton lining A soft 100% Cotton lining that provides a comfortable fit especially the innermost part of your underwear Silky texture It uses a thin, soft, dense fabric that feels silky with a soft, comfortable fit, and a smooth moisture absorption and release function that makes it dry quickly and refreshing Fabric Nylon 75% Spandex 25%