Hop Hare socks are available in two sizes: 3.5-6.5 UK (36-40 EU) and 7.5-11.5 UK (41-46 EU). Made in Turkey. Composition: 70% Bamboo, 28.5% Polyamide, 1.5% Elastane. Why bamboo socks? – breathable – antibacterial – thermoregulating – moisture wicking – smooth toe seam – environmentally friendly bamboo fibres