Castelli Invisibile Women's Sock, With no ankle cuff this sock appears invisible under your cycling shoes. However you do benefit from greater comfort, drier feet and arch support. So if you want a sockless tan but still value cycling performance this is the sock to go for.Key Features:Meryl® Skinlife yarns feature bacteriostatic silver ionsDiaphanous web mesh on top of footMidfoot support bandNo ankle cuff to be practically invisibleHeel tab to prevent rubbing on the back of cycling shoe