I concur with other reviews that said they hurt back lower calf/heel. Other than that they are quite stylish, warm and comfortable.  Did not try them with thick sox, but wonder if they would have been too short with them and my size 12 feet.  Read one review that said the boot wore in after about a week and heel pain went away so maybe I'll try them next year.  Got a pair of Snow Lion boots to replace them and they are fantastic!