These are made of thin knit.  They have about a 2" ribbed cuff and ribbed elastic around the top.  They are a little higher than I usually like to wear my socks.  The elastic around the top leaves an indention around my ankle.  And the ribbing leaves marks as well.  These fit nicely size wise.  The toe seams are smooth and don't bother me. They launder well, too.  They are great for summer wear.