This lightweight sock is sure to be a favorite. It&';s constructed with a moisture-wicking Transfer fabric made from recycled materials. A 360-degree tension band around the arch provides a secure, smooth fit that is ideal for close fitting cycling shoes. They feature a low profile 4" cuff with venting on the top of the foot for enhanced breathability. a Ankle-height 4" cuffa 360-degree arch tension band for a secure fita Moisture-wicking, fast-drying Transfer blenda Made from recycled materials CARE Wash with simple detergents without additives. Pick a gentle wash cycle. Close all zippers and hook and loop closures ("Velcro"). Tumble dry using a lower heat setting (fabric should not be hot to the touch). When in doubt (or to save energy) hang your clothing to dry. Do not use dryer sheets. Products with scents, softeners, etc. will inhibit performance of technical fabrics.