Why do you need to measure your wrist before buying a Fitbit? Fitbits come in two standard sizes small and large (though you can get an X large by ordering models through the Fitbit site). It's a little strange that there's not a medium or regular size.
Cincinnati is in the bluegrass region of Ohio. A major city of the Ohio Valley, Cincinnati is situated on the north bank of the Ohio River in Hamilton County, which is the extreme southwestern county of the state of Ohio. It is midway by river between the cities of Pittsburgh, Pennsylvania and Cairo, Illinois.
Mason is a city in southwestern Warren County, Ohio, United States, approximately 22 miles (35 km) from downtown Cincinnati. As of the 2010 census, Mason's population was 30,712. Mason was transformed into a large, bustling community, and one of the most affluent in Greater Cincinnati, beginning in the 1990s. Mason sits at the core of the Cincinnati-Dayton Metropolitan Region, the 14th largest urban area in the nation.