Just in case anyone is looking for a very affordable pair of boots for a narrow calf, I thought I'd share these: https://www.target.com/Merona-.....wv_1_title

They come in brown and black and the calf circumference is 13 inches. I bought a pair brown and while it's still too hot to really try them out, they seem like they'll be comfortable. I think they may run a tiny bit big..not sure though.