Simple bracelet with a single row of cone studs.
For sizing, measure around your wrist with a piece of string. You can go a little bigger for sizing, but not smaller.
For example, if your wrist is 6.5" around, you could wear a cuff for a 7" wrist, but not one that was sized at 6". In other words, a larger bracelet will fit with a little extra room but a smaller one will not.