Designed for racing and training in all seasons and conditions, constructed from polypropylene and resistex carbon. Made from truly innovative and technological fibres, they're breathable, durable, lightweight and comfortable. The unique blend of materials has superior thermal insulation properties. The socks maintain all of these characteristics, while still maintaining optimal breathability. They\'ll keep your feet dry and warm in winter, and dry and fresh in summer. Composition: 81% PPL, 9% Lycra, 6% Resistex Carbon, 4% Nylon Reflex Key Features: No open mesh for cold conditions, high density, high compression, arch support. Care: Wash at 30 deg, do not iron, do not tumble dry, do not bleach, do not dry clean. Made in Italy by The Wonderful Socks