Uniqlo HEATTECH knee-high socks.
10 eur (2 pairs) here.
Superb warmth from knee to toe. Uniqlo HEATTECH socks protect from dryness and chill. Moisture-retaining features. Self-deodorizing feature helps prevent troublesome odors. Knee-high cut lets you wear skirt styles even in cold weather. 2-pair set. 51% Acrylic, 27% Rayon, 18% Polyester, 2% Spandex, 2% Nylon.