I use the Fitbit Flex for 3 weeks and I alternate bracelets regularly. I have no complaints about the quality of the product. Some complain plastic ties but they did not understand that these are ties dappoint: Lot 3 bracelets comes with three attachments, a metal that serves to keep the wrist strap and 2 plastic which serves bracelets to keep closed in the package.
The bracelets are easy to close once you have the hang of it.
The colors in the photos are not very faithful. In reality: - Navy blue is less bright - Turquoise is slightly bluish - The mandarin orange is more