From the Manufacturer:
Women's socks, made with the precious silk yarn, a classic of Maria La Rosa, suitable for every season. The material with which they are made, in fact, notwithstanding its thinness, is extraordinarily insulating, resulting very cool in summer and warm in winter. Subsequently the model has been covered with a metallic finish, which, after many washings, tends to disappear, letting the brilliance of the underlying silk to emerge. The brightness of the foil makes them the perfect accessory for parties and occasions in which you don’t want to go unnoticed with sparkling elegance.
Composition: 82% silk, 18% polyamide