Made of high quality cotton, this moisture wicking sock will keep your cool and comfortable while letting your style shine through.. Material. 78% Carded Cotton, 20% Nylon, 2% Spandex. Shoe sizeEU 36-39, US 5-8, UK 3-6(Reference：https://www.blitzresults.com/en/shoe-size-conversion/）. Heightmid-calf. ShippingShipped by air, delivery timeline estimated 7 working days with standard shipping