Hilly No Show Running Cushion Socklet, White/Grey, X Large with a sock ring The Hilly Mono Skin Padded Socklet is a cushioned, low cut, wicking Thermocool socklet that ensure you stay comfortable on extended runs, during training or on walks 86% Coolmax, 12% Polyamide, 2% Elastane (Lycra) for improved moisture wicking to prevent blisters Complete cusioning on bottom of foot Ventflex panels for improved breathability Comes with a Sock ring that helps keep track of your socks and keep them together in the wash so you don't loose the matches