These socks are made of knit mulberry silk, they are super soft, silky smooth, breathable, lightweight and healthy.Free size, EU 35-44, US 4.5-9.5, Asia 22-27.Material: 70% mulberry silk, 30% spandex.The fabric has a light and natural feel. * Silk is a natural insulator keeping toes warm, but not too hot.* Mulberry sil