Thanks for your replies!
If i measure a 16" calf and got a 16.5", would it still work? I mean, I figure my calf will grow with all the riding.
I am going to a couple local tack stores to try some on. So, we'll see how that turns out. I am hoping to find a quality pair that fit, and I could also find online for a cheaper price. if not, I will just buy them from the store.