The HI SIDE thin MX performance sock designed with top level racers in mind. Our thin MX sock blends performance knits, functional yarns and stylish design with To-the-knee height Features Custom Cool-max moisture wicking yarn blend Compression arch support Engineered mesh air channels Lightweight construction Strategically padded and reinforced heel, toe, ankle and shin areas for strength and durability Left and Right foot specific fit for improved comfort To-the-Knee length supported by a wide cuff to aid in keeping your socks up Large back of leg engineered mesh knit panel for enhanced cooling Targeted knit compression arch support to help keep you riding longer Strategic top of foot knit and ankle mesh zones for enhanced breathability Dense knit cushioned footbed for added comfortability Lightweight and thin custom moisture wicking yarn blend for comfort and moisture management To-the-Knee length supported by a wide cuff to aid in keeping your socks up Large back of leg engineered mesh knit panel for enhanced cooling Strategically padded and reinforced heel, toe,ankle and shin areas for strength and durability Targeted knit compression arch support to help keep you riding longer Strategic top of foot knit and ankle mesh zones for enhanced breathability Dense knit cushioned footbed for added comfortability Left and Right foot specific fit fr improved comfort table, th, td { padding: 5px; border-collapse:collapse } table { border-spacing: 2px; width: 100%; } tr { border-bottom: 1pt solid black; } table > *:first-child:not(thead) td:first-child { font-weight: bold; } SOCK SIZE S/M L/XL WOMEN US 7-12 12-15 MEN US 6-10 10-13 MEN EU 38-42 42-46