Fluted Jeweler's Brass Cuff Bracelet

As long as the sealant coat is intact it will not tarnish or change color, so clean it with ordinary soap and water if needed. Do not use ultrasound or copper or brass cleaners.  They can damage and dull the sealer coat. Avoid contact with solvents like nail polish, polish remover and petroleum products.

Your bracelet is wrist shaped--a flattened oval--but it may not be exactly your wrist shape.  If you want to adjust the fit do it slowly and gently, with both hands wrapped around the bracelet to support it from all sides.  Shape it a little at a time instead of in one big push that might crease it.   

Use a tape measure, or a string and ruler.  Measure around your wrist below the wrist bone.  Hold the tape or string so it is comfortably snug, neither tight nor loose. Enter the measurement in the text field where requested and select Size to Fit in "Length".