Fit & Design: No show athletic ultra-light cushioned socks Patented Sock-Lock Technology delivers targeted compression where it's needed most Ultra-thin construction takes up minimal room inside the shoe iWick(R) fibers pull moisture away from feet to keep them dry and odor free Anatomical design enhances fit to deliver maximum comfort and protection No Show tab height sits below the ankle for maximum versatility PerfectToe(TM) technology delivers seamless fit and helps prevent irritation SIZE CHART: Sock Size: Small = Shoe Size: Women's 4-6.5 Sock Size: Medium = Shoe Size: Men's 6-8.5, Women's 7-9.5 Sock Size: Large = Shoe Size: Men's 9-12, Women's 10-13 Sock Size: X Large = Shoe Size: Men's 12-15.5