Fits a S/M wrist. S/M is recommended for wrists with a 6.25 - 6.75” circumference (5.5” wire length)

Cuffs are the C shaped bracelets, worn snug on the wrist usually with an ~1.5" opening on the underside. Cuffs are slightly adjustable (have to be to put them on and off) the sizing is a less defined.

Your wrist circumference is the biggest factor in picking the right size. However, your wrist shape and personal preference also play a role. I have a 6” wrist and usually wear a XS size but sometimes wear a S/M depending on the style.

Cuffs are meant to be open and closed very slightly. The best way to get the cuff on and off the wrist is to go the the side of the wrist (most narrow point). When putting the cuff on gently tighten the cuff with a little squeeze. Please be cautious to over work the cuff or open and close it more than needed.