"i bought these based on a few other good reviews & because the description says the opening is 14". i have a very narrow calf so i need a 14" circ or less...i was swimming in these, they buckled at my ankles...even with jeans on they were still huge around my calves, and i could feel something hard from the heel digging into the arch of my foot. i'll be returning these...they just didn't live up to my expectations."