Wear your Fitbit One wireless activity and sleep tracker comfortably with this Fitbit FB152OC-BK clip, which attaches quickly and easily to your belt, pocket or bra.
I use my FitBit on a daily basis. I use the clip to attach the FitBit to my shoe/sock/pocket. Very useful. I ruined the clip that came with my FitBit by clipping it to a boot which stretched it out too far.