Theyrun really big.I usually wear a 13, I need to downside to a 7 ,I am 5 foot 9 166 pounds.

What a disaster! I usually wear a size 15 in non-stretch FN jeans. These are at least 2 sizes too big if not 3. They fit like a size 20 on me. I'm 5'9, 200lbs and measurements are 40-31-45 for reference. In addition they were longer than what a 5 inch heel can't even cure. This is the worst pair of pants from FN that I've ever purchased. Try sizing down 2 to 3 sizes depending on the fit you're wanting if you want to take a chance. NBA long for the extreme tall.