From a product expert's perspective, AS Colour Invisible Socks 2 pack (1206) are expertly crafted from a blend of 75% cotton, 22% polyester, and 3% spandex, making them lightweight and comfortable to wear. These low-cut socks feature a stretch knit design, gel heel grip, and a stretchy opening for a secure fit. Please note, these socks are sized according to US men's sizes.