A cycling specific sock using Meryl Skinlife® yarns and a Diaphanous web mesh on the top of the foot for total foot happiness on long hot summer rides. The no ankle cuff makes them practically invisible, hence the name. Key Features:Meryl Skinlife® yarns feature bacteriostatic silver ions.Diaphanous web mesh on top of foot.Midfoot support band.No ankle cuff to be practically invisible.Heel tab to prevent rubbing on the back of cycling shoe.