Compressport winter bike socks v2 1compressports v21 winter bike socks are made of technical fabrics for optimum compression breathability warmth and moisture transfer the double layer knitting ensures superior foot comfort with exceptional warmth protects achilles tendonthese winter bike socks feature 3d dots on the feet to stimulate blood circulation while other 3d dots protect the malleolus area and the achilles tendon these 3d dots also ensure maximum grip featuresknitted in merino w