Many people consider cuffs to be one size fits all, or at most have a "men's" and a "women's". It's not that cuffs aren't easy to fit- its just that the looser they are, the less active you can be before they fall off. If you're walking around a museum, then by all means- consider the 6.5 to be a women's one size, and the 7.5 to be a men's one size. The closer you come to the right size, the more active you can be. If we are to reference our wearability chart, for every 1/2 inch a bracelet is too big for you, you loose a number. You can squeeze a too large bracelet shut over your wrist, but the constant bending will then cut into its durability, resulting in the same loss on our chart. A bracelet one size too small can usually be worn as well by opening it up a little, this will also drop it down one number on our chart. The numbers are meant to correspond with your actual wrist size, not the size you would like a bracelet to be. Take a piece of string, wrap it around your wrist, and measure its length. That number will be your size. The chart below should help with gift giving.