Ultra-thin, lightweight construction for a barely there feel. Front comfort tab protects top of foot from lace bite & irritation. Interior no-slip silicone grips on back of heel helps keep your socks from sliding down. Fitted heel contours around foot for a better fit. Seamless Toe delivers superior comfort & reduced irritation. Material wicks sweat & dries really fast. The problem with a lot of super-low socks is that they let your shoes rub on the front of your ankle—but not with these. The innovative front tab eliminates chafing, so your socks can stay comfortable—and almost invisible.