I have two of these anklets.  I liked the first one so much that I ordered the second to have as a spare/back-up.  My ankle measures 8 1/2" and I ordered the 9" anklet.  It fits perfectly!  I wear it 24/7 and never take it off.  Every once in a while it seems to be a little tarnished (from body lotion, I believe) and all it takes is a quick swipe with a silver polishing cloth and voila ... as pretty as new!  If you are looking for an anklet that you can wear all the time this is the anklet for you.  It is very smooth and doesn't catch on clothing.  I am very pleased with my purchase of this anklet!