Find a soft measurement tape from your grandma’s toolbox or a thin piece of thread. Wrap the measuring tape around your wrist and do it tightly. The number on the measuring tape is your wrist size. Use a piece of thread instead? Mark it where the end meets and measure it with a ruler. This is your wrist size. Note: do you prefer a snug, comfort or loose fit? Ask your retailer for help finding the right size. Learn more right here.