I am pretty in socks today. Gotcha! Not real socks. These are Pretty Polly secret socks. Sock like material for the sick bit and a nice soft denier feel for the grid pattern top bit. Lovely and comfortable even though on second look they are a ML size rather than an SM. Think the socks helped by being socks and staying quite firmly in place just under the knee. The description call them “secret” because you can hideaway the sock underneath a pair of boots but why would you want to do that, ay?