I can probably find narrow calf boots anywhere with a large enough selection of shoes, but what I can't find is a site that lets me search by calf width. Nordstrom doesn't let you search by calf width anymore, as far as I can tell My other favorite sites, including zappos, either don't let you narrow by calf width at all, or they only let you choose wider calves. Endless has a "narrow" calf section, but they define narrow as 15" inches or less, meaning that almost none of the boots are actually filtered out, since the vast majority of knee high boots have 15" calf circumference. I have 12" calves, fyi.