My wrist measures 6.25 in., and I wear a size 17 cuff. I wear it close to the bottom of my wrist, and I pinch it a little bit so it doesn’t move up and down much. You do not want to wear a cuff with a lot of room, because it will dig into your wrist as you move it, and you will catch it on things. Once in a while I catch mine on a grocery bag, but that’s it. I love my cuff. If you want a bracelet that moves up and down on your arm, get the bangle. I think a 16 would fit you. There is a video on YouTube about how to put on and take off a cuff bracelet. I would recommend watching it, so you don’t struggle to put it on and buy a bracelet larger than you need. Good luck shopping.