I purchased these socks to be used at my wedding, I love them.  Egyptian cotton is an ideal fabric to use and is one of the best cottons out there.  As the name suggests, Egyptian cotton is cotton grown in Egypt near the nile.  The humid conditions and rich soil in Egypt along the Nile River Valley create the perfect conditions to grow long cotton fibers. The fibers of Egyptian cotton can range from 1 1/2 inches to 2 1/4 inches. Their long length (about twice the size of other cotton fibers) allows them to be spun into very fine yarns. These yarns are soft and lustrous yet are very strong and durable.  Because of this anything made from Egyptian cotton (from towels to hammocks) tend to last longer and keep you warmer, very nice socks.