What is Fitbit Flex? Check out their site
We are currently offering custom engraving on the top surface of the Fitbit Flex band and on the metal clasp. On request we can also customize other areas of the band. If you're interested in those options, drop us a line.
You can order a whole Fitbit Flex kit through us, you can order a single custom Fitbit Flex wrist band, or you can send us the wrist bands you already own. Whole kits come with both small and large wristbands, but you can choose to engrave one size, or both.